diff --git a/beets/autotag/hooks.py b/beets/autotag/hooks.py
index d7c701db6..9bdf6b001 100644
--- a/beets/autotag/hooks.py
+++ b/beets/autotag/hooks.py
@@ -39,8 +39,25 @@ except AttributeError:
 
 
 # Classes used to represent candidate options.
+class AttrDict(dict):
+    """A dictionary that supports attribute ("dot") access, so `d.field`
+    is equivalent to `d['field']`.
+    """
 
-class AlbumInfo(object):
+    def __getattr__(self, attr):
+        if attr in self:
+            return self.get(attr)
+        else:
+            raise AttributeError
+
+    def __setattr__(self, key, value):
+        self.__setitem__(key, value)
+
+    def __hash__(self):
+        return id(self)
+
+
+class AlbumInfo(AttrDict):
     """Describes a canonical release that may be used to match a release
     in the library. Consists of these data members:
 
@@ -49,43 +66,21 @@ class AlbumInfo(object):
     - ``artist``: name of the release's primary artist
     - ``artist_id``
     - ``tracks``: list of TrackInfo objects making up the release
-    - ``asin``: Amazon ASIN
-    - ``albumtype``: string describing the kind of release
-    - ``va``: boolean: whether the release has "various artists"
-    - ``year``: release year
-    - ``month``: release month
-    - ``day``: release day
-    - ``label``: music label responsible for the release
-    - ``mediums``: the number of discs in this release
-    - ``artist_sort``: name of the release's artist for sorting
-    - ``releasegroup_id``: MBID for the album's release group
-    - ``catalognum``: the label's catalog number for the release
-    - ``script``: character set used for metadata
-    - ``language``: human language of the metadata
-    - ``country``: the release country
-    - ``albumstatus``: MusicBrainz release status (Official, etc.)
-    - ``media``: delivery mechanism (Vinyl, etc.)
-    - ``albumdisambig``: MusicBrainz release disambiguation comment
-    - ``releasegroupdisambig``: MusicBrainz release group
-            disambiguation comment.
-    - ``artist_credit``: Release-specific artist name
-    - ``data_source``: The original data source (MusicBrainz, Discogs, etc.)
-    - ``data_url``: The data source release URL.
 
     ``mediums`` along with the fields up through ``tracks`` are required.
     The others are optional and may be None.
     """
-    def __init__(self, album, album_id, artist, artist_id, tracks, asin=None,
-                 albumtype=None, va=False, year=None, month=None, day=None,
-                 label=None, mediums=None, artist_sort=None,
-                 releasegroup_id=None, catalognum=None, script=None,
-                 language=None, country=None, style=None, genre=None,
-                 albumstatus=None, media=None, albumdisambig=None,
+    def __init__(self, tracks, album=None, album_id=None, artist=None,
+                 artist_id=None, asin=None, albumtype=None, va=False,
+                 year=None, month=None, day=None, label=None, mediums=None,
+                 artist_sort=None, releasegroup_id=None, catalognum=None,
+                 script=None, language=None, country=None, style=None,
+                 genre=None, albumstatus=None, media=None, albumdisambig=None,
                  releasegroupdisambig=None, artist_credit=None,
                  original_year=None, original_month=None,
                  original_day=None, data_source=None, data_url=None,
                  discogs_albumid=None, discogs_labelid=None,
-                 discogs_artistid=None):
+                 discogs_artistid=None, **kwargs):
         self.album = album
         self.album_id = album_id
         self.artist = artist
@@ -120,6 +115,7 @@ class AlbumInfo(object):
         self.discogs_albumid = discogs_albumid
         self.discogs_labelid = discogs_labelid
         self.discogs_artistid = discogs_artistid
+        self.update(kwargs)
 
     # Work around a bug in python-musicbrainz-ngs that causes some
     # strings to be bytes rather than Unicode.
@@ -138,53 +134,36 @@ class AlbumInfo(object):
             if isinstance(value, bytes):
                 setattr(self, fld, value.decode(codec, 'ignore'))
 
-        if self.tracks:
-            for track in self.tracks:
-                track.decode(codec)
+        for track in self.tracks:
+            track.decode(codec)
+
+    def copy(self):
+        dupe = AlbumInfo([])
+        dupe.update(self)
+        dupe.tracks = [track.copy() for track in self.tracks]
+        return dupe
 
 
-class TrackInfo(object):
+class TrackInfo(AttrDict):
     """Describes a canonical track present on a release. Appears as part
     of an AlbumInfo's ``tracks`` list. Consists of these data members:
 
     - ``title``: name of the track
     - ``track_id``: MusicBrainz ID; UUID fragment only
-    - ``release_track_id``: MusicBrainz ID respective to a track on a
-            particular release; UUID fragment only
-    - ``artist``: individual track artist name
-    - ``artist_id``
-    - ``length``: float: duration of the track in seconds
-    - ``index``: position on the entire release
-    - ``media``: delivery mechanism (Vinyl, etc.)
-    - ``medium``: the disc number this track appears on in the album
-    - ``medium_index``: the track's position on the disc
-    - ``medium_total``: the number of tracks on the item's disc
-    - ``artist_sort``: name of the track artist for sorting
-    - ``disctitle``: name of the individual medium (subtitle)
-    - ``artist_credit``: Recording-specific artist name
-    - ``data_source``: The original data source (MusicBrainz, Discogs, etc.)
-    - ``data_url``: The data source release URL.
-    - ``lyricist``: individual track lyricist name
-    - ``composer``: individual track composer name
-    - ``composer_sort``: individual track composer sort name
-    - ``arranger`: individual track arranger name
-    - ``track_alt``: alternative track number (tape, vinyl, etc.)
-    - ``work`: individual track work title
-    - ``mb_workid`: individual track work id
-    - ``work_disambig`: individual track work diambiguation
 
     Only ``title`` and ``track_id`` are required. The rest of the fields
     may be None. The indices ``index``, ``medium``, and ``medium_index``
     are all 1-based.
     """
-    def __init__(self, title, track_id, release_track_id=None, artist=None,
-                 artist_id=None, length=None, index=None, medium=None,
-                 medium_index=None, medium_total=None, artist_sort=None,
-                 disctitle=None, artist_credit=None, data_source=None,
-                 data_url=None, media=None, lyricist=None, composer=None,
-                 composer_sort=None, arranger=None, track_alt=None,
-                 work=None, mb_workid=None, work_disambig=None, bpm=None,
-                 initial_key=None, genre=None):
+    def __init__(self, title=None, track_id=None, release_track_id=None,
+                 artist=None, artist_id=None, length=None, index=None,
+                 medium=None, medium_index=None, medium_total=None,
+                 artist_sort=None, disctitle=None, artist_credit=None,
+                 data_source=None, data_url=None, media=None, lyricist=None,
+                 composer=None, composer_sort=None, arranger=None,
+                 track_alt=None, work=None, mb_workid=None,
+                 work_disambig=None, bpm=None, initial_key=None, genre=None,
+                 **kwargs):
         self.title = title
         self.track_id = track_id
         self.release_track_id = release_track_id
@@ -212,6 +191,7 @@ class TrackInfo(object):
         self.bpm = bpm
         self.initial_key = initial_key
         self.genre = genre
+        self.update(kwargs)
 
     # As above, work around a bug in python-musicbrainz-ngs.
     def decode(self, codec='utf-8'):
@@ -224,6 +204,11 @@ class TrackInfo(object):
             if isinstance(value, bytes):
                 setattr(self, fld, value.decode(codec, 'ignore'))
 
+    def copy(self):
+        dupe = TrackInfo()
+        dupe.update(self)
+        return dupe
+
 
 # Candidate distance scoring.
 
diff --git a/beets/autotag/mb.py b/beets/autotag/mb.py
index f86d3be71..ea8ef24da 100644
--- a/beets/autotag/mb.py
+++ b/beets/autotag/mb.py
@@ -193,8 +193,8 @@ def track_info(recording, index=None, medium=None, medium_index=None,
     the number of tracks on the medium. Each number is a 1-based index.
     """
     info = beets.autotag.hooks.TrackInfo(
-        recording['title'],
-        recording['id'],
+        title=recording['title'],
+        track_id=recording['id'],
         index=index,
         medium=medium,
         medium_index=medium_index,
@@ -341,11 +341,11 @@ def album_info(release):
             track_infos.append(ti)
 
     info = beets.autotag.hooks.AlbumInfo(
-        release['title'],
-        release['id'],
-        artist_name,
-        release['artist-credit'][0]['artist']['id'],
-        track_infos,
+        album=release['title'],
+        album_id=release['id'],
+        artist=artist_name,
+        artist_id=release['artist-credit'][0]['artist']['id'],
+        tracks=track_infos,
         mediums=len(release['medium-list']),
         artist_sort=artist_sort_name,
         artist_credit=artist_credit_name,
diff --git a/beetsplug/cue.py b/beetsplug/cue.py
index 92ca8784a..1ff817b2b 100644
--- a/beetsplug/cue.py
+++ b/beetsplug/cue.py
@@ -53,5 +53,6 @@ class CuePlugin(BeetsPlugin):
             title = "dunno lol"
             track_id = "wtf"
             index = int(path.basename(t)[len("split-track"):-len(".wav")])
-            yield TrackInfo(title, track_id, index=index, artist=artist)
+            yield TrackInfo(title=title, track_id=track_id, index=index,
+                            artist=artist)
         # generate TrackInfo instances
diff --git a/beetsplug/discogs.py b/beetsplug/discogs.py
index 86ace9aa8..038fa809a 100644
--- a/beetsplug/discogs.py
+++ b/beetsplug/discogs.py
@@ -356,17 +356,14 @@ class DiscogsPlugin(BeetsPlugin):
         # a master release, otherwise fetch the master release.
         original_year = self.get_master_year(master_id) if master_id else year
 
-        return AlbumInfo(album, album_id, artist, artist_id, tracks, asin=None,
-                         albumtype=albumtype, va=va, year=year, month=None,
-                         day=None, label=label, mediums=len(set(mediums)),
-                         artist_sort=None, releasegroup_id=master_id,
-                         catalognum=catalogno, script=None, language=None,
+        return AlbumInfo(album=album, album_id=album_id, artist=artist,
+                         artist_id=artist_id, tracks=tracks,
+                         albumtype=albumtype, va=va, year=year,
+                         label=label, mediums=len(set(mediums)),
+                         releasegroup_id=master_id, catalognum=catalogno,
                          country=country, style=style, genre=genre,
-                         albumstatus=None, media=media,
-                         albumdisambig=None, artist_credit=None,
-                         original_year=original_year, original_month=None,
-                         original_day=None, data_source='Discogs',
-                         data_url=data_url,
+                         media=media, original_year=original_year,
+                         data_source='Discogs', data_url=data_url,
                          discogs_albumid=discogs_albumid,
                          discogs_labelid=labelid, discogs_artistid=artist_id)
 
@@ -567,10 +564,9 @@ class DiscogsPlugin(BeetsPlugin):
             track.get('artists', [])
         )
         length = self.get_track_length(track['duration'])
-        return TrackInfo(title, track_id, artist=artist, artist_id=artist_id,
-                         length=length, index=index,
-                         medium=medium, medium_index=medium_index,
-                         artist_sort=None, disctitle=None, artist_credit=None)
+        return TrackInfo(title=title, track_id=track_id, artist=artist,
+                         artist_id=artist_id, length=length, index=index,
+                         medium=medium, medium_index=medium_index)
 
     def get_track_index(self, position):
         """Returns the medium, medium index and subtrack index for a discogs
diff --git a/beetsplug/fetchart.py b/beetsplug/fetchart.py
index 763440238..70477a624 100644
--- a/beetsplug/fetchart.py
+++ b/beetsplug/fetchart.py
@@ -210,6 +210,9 @@ class ArtSource(RequestMixin):
     def fetch_image(self, candidate, plugin):
         raise NotImplementedError()
 
+    def cleanup(self, candidate):
+        pass
+
 
 class LocalArtSource(ArtSource):
     IS_LOCAL = True
@@ -291,6 +294,13 @@ class RemoteArtSource(ArtSource):
             self._log.debug(u'error fetching art: {}', exc)
             return
 
+    def cleanup(self, candidate):
+        if candidate.path:
+            try:
+                util.remove(path=candidate.path)
+            except util.FilesystemError as exc:
+                self._log.debug(u'error cleaning up tmp art: {}', exc)
+
 
 class CoverArtArchive(RemoteArtSource):
     NAME = u"Cover Art Archive"
@@ -1017,6 +1027,8 @@ class FetchArtPlugin(plugins.BeetsPlugin, RequestMixin):
                             u'using {0.LOC_STR} image {1}'.format(
                                 source, util.displayable_path(out.path)))
                         break
+                    # Remove temporary files for invalid candidates.
+                    source.cleanup(candidate)
                 if out:
                     break
 
diff --git a/beetsplug/subsonicplaylist.py b/beetsplug/subsonicplaylist.py
new file mode 100644
index 000000000..c537c4093
--- /dev/null
+++ b/beetsplug/subsonicplaylist.py
@@ -0,0 +1,173 @@
+# -*- coding: utf-8 -*-
+# This file is part of beets.
+# Copyright 2019, Joris Jensen
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+
+from __future__ import absolute_import, division, print_function
+
+import random
+import string
+import xml.etree.ElementTree as ET
+from hashlib import md5
+from urllib.parse import urlencode
+
+import requests
+
+from beets.dbcore import AndQuery
+from beets.dbcore.query import MatchQuery
+from beets.plugins import BeetsPlugin
+from beets.ui import Subcommand
+
+__author__ = 'https://github.com/MrNuggelz'
+
+
+def filter_to_be_removed(items, keys):
+    if len(items) > len(keys):
+        dont_remove = []
+        for artist, album, title in keys:
+            for item in items:
+                if artist == item['artist'] and \
+                        album == item['album'] and \
+                        title == item['title']:
+                    dont_remove.append(item)
+        return [item for item in items if item not in dont_remove]
+    else:
+        def to_be_removed(item):
+            for artist, album, title in keys:
+                if artist == item['artist'] and\
+                           album == item['album'] and\
+                           title == item['title']:
+                    return False
+            return True
+
+        return [item for item in items if to_be_removed(item)]
+
+
+class SubsonicPlaylistPlugin(BeetsPlugin):
+
+    def __init__(self):
+        super(SubsonicPlaylistPlugin, self).__init__()
+        self.config.add(
+            {
+                'delete': False,
+                'playlist_ids': [],
+                'playlist_names': [],
+                'username': '',
+                'password': ''
+            }
+        )
+        self.config['password'].redact = True
+
+    def update_tags(self, playlist_dict, lib):
+        with lib.transaction():
+            for query, playlist_tag in playlist_dict.items():
+                query = AndQuery([MatchQuery("artist", query[0]),
+                                  MatchQuery("album", query[1]),
+                                  MatchQuery("title", query[2])])
+                items = lib.items(query)
+                if not items:
+                    self._log.warn(u"{} | track not found ({})", playlist_tag,
+                                   query)
+                    continue
+                for item in items:
+                    item.subsonic_playlist = playlist_tag
+                    item.try_sync(write=True, move=False)
+
+    def get_playlist(self, playlist_id):
+        xml = self.send('getPlaylist', {'id': playlist_id}).text
+        playlist = ET.fromstring(xml)[0]
+        if playlist.attrib.get('code', '200') != '200':
+            alt_error = 'error getting playlist, but no error message found'
+            self._log.warn(playlist.attrib.get('message', alt_error))
+            return
+
+        name = playlist.attrib.get('name', 'undefined')
+        tracks = [(t.attrib['artist'], t.attrib['album'], t.attrib['title'])
+                  for t in playlist]
+        return name, tracks
+
+    def commands(self):
+        def build_playlist(lib, opts, args):
+            self.config.set_args(opts)
+            ids = self.config['playlist_ids'].as_str_seq()
+            if self.config['playlist_names'].as_str_seq():
+                playlists = ET.fromstring(self.send('getPlaylists').text)[
+                    0]
+                if playlists.attrib.get('code', '200') != '200':
+                    alt_error = 'error getting playlists,' \
+                                ' but no error message found'
+                    self._log.warn(
+                        playlists.attrib.get('message', alt_error))
+                    return
+                for name in self.config['playlist_names'].as_str_seq():
+                    for playlist in playlists:
+                        if name == playlist.attrib['name']:
+                            ids.append(playlist.attrib['id'])
+
+            playlist_dict = self.get_playlists(ids)
+
+            # delete old tags
+            if self.config['delete']:
+                existing = list(lib.items('subsonic_playlist:";"'))
+                to_be_removed = filter_to_be_removed(
+                    existing,
+                    playlist_dict.keys())
+                for item in to_be_removed:
+                    item['subsonic_playlist'] = ''
+                    with lib.transaction():
+                        item.try_sync(write=True, move=False)
+
+            self.update_tags(playlist_dict, lib)
+
+        subsonicplaylist_cmds = Subcommand(
+            'subsonicplaylist', help=u'import a subsonic playlist'
+        )
+        subsonicplaylist_cmds.parser.add_option(
+            u'-d',
+            u'--delete',
+            action='store_true',
+            help=u'delete tag from items not in any playlist anymore',
+        )
+        subsonicplaylist_cmds.func = build_playlist
+        return [subsonicplaylist_cmds]
+
+    def generate_token(self):
+        salt = ''.join(random.choices(string.ascii_lowercase + string.digits))
+        return md5(
+            (self.config['password'].get() + salt).encode()).hexdigest(), salt
+
+    def send(self, endpoint, params=None):
+        if params is None:
+            params = dict()
+        a, b = self.generate_token()
+        params['u'] = self.config['username']
+        params['t'] = a
+        params['s'] = b
+        params['v'] = '1.12.0'
+        params['c'] = 'beets'
+        resp = requests.get('{}/rest/{}?{}'.format(
+            self.config['base_url'].get(),
+            endpoint,
+            urlencode(params))
+        )
+        return resp
+
+    def get_playlists(self, ids):
+        output = dict()
+        for playlist_id in ids:
+            name, tracks = self.get_playlist(playlist_id)
+            for track in tracks:
+                if track not in output:
+                    output[track] = ';'
+                output[track] += name + ';'
+        return output
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 5d8c26bb9..545145f0d 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -6,6 +6,7 @@ Changelog
 
 New features:
 
+* :doc:`/plugins/subsonicplaylist`: import playlist from a subsonic server.
 * A new :ref:`extra_tags` configuration option allows more tagged metadata
   to be included in MusicBrainz queries.
 * A new :doc:`/plugins/fish` adds `Fish shell`_ tab autocompletion to beets
@@ -115,6 +116,9 @@ New features:
   :bug:`3459`
 * :doc:`/plugins/fetchart`: Album art can now be fetched from `last.fm`_.
   :bug:`3530`
+* The classes ``AlbumInfo`` and ``TrackInfo`` now have flexible attributes,
+  allowing to solve :bug:`1547`. 
+  Thanks to :user:`dosoe`.
 * :doc:`/plugins/web`: The query API now interprets backslashes as path
   separators to support path queries.
   Thanks to :user:`nmeum`.
@@ -122,9 +126,11 @@ New features:
 
 Fixes:
 
-* :doc:`/plugins/fetchart`: Fixed a bug that caused fetchart to not take 
+* :doc:`/plugins/fetchart`: Fixed a bug that caused fetchart to not take
   environment variables such as proxy servers into account when making requests
   :bug:`3450`
+* :doc:`/plugins/fetchart`: Temporary files for fetched album art that fail
+  validation are now removed
 * :doc:`/plugins/inline`: In function-style field definitions that refer to
   flexible attributes, values could stick around from one function invocation
   to the next. This meant that, when displaying a list of objects, later
diff --git a/docs/plugins/index.rst b/docs/plugins/index.rst
index 1247d0ed0..de2f2930c 100644
--- a/docs/plugins/index.rst
+++ b/docs/plugins/index.rst
@@ -116,6 +116,7 @@ following to your configuration::
    smartplaylist
    sonosupdate
    spotify
+   subsonicplaylist
    subsonicupdate
    the
    thumbnails
diff --git a/docs/plugins/subsonicplaylist.rst b/docs/plugins/subsonicplaylist.rst
new file mode 100644
index 000000000..98c83ebe1
--- /dev/null
+++ b/docs/plugins/subsonicplaylist.rst
@@ -0,0 +1,43 @@
+Subsonic Playlist Plugin
+========================
+
+The ``subsonicplaylist`` plugin allows to import playlists from a subsonic server.
+This is done by retrieving the track info from the subsonic server, searching
+for them in the beets library, and adding the playlist names to the
+`subsonic_playlist` tag of the found items. The content of the tag has the format:
+
+    subsonic_playlist: ";first playlist;second playlist;"
+
+To get all items in a playlist use the query `;playlist name;`.
+
+Command Line Usage
+------------------
+
+To use the ``subsonicplaylist`` plugin, enable it in your configuration (see
+:ref:`using-plugins`). Then use it by invoking the ``subsonicplaylist`` command.
+Next, configure the plugin to connect to your Subsonic server, like this::
+
+    subsonicplaylist:
+        base_url: http://subsonic.example.com
+        username: someUser
+        password: somePassword
+
+After this you can import your playlists by invoking the `subsonicplaylist` command.
+
+By default only the tags of the items found for playlists will be updated.
+This means that, if one imported a playlist, then delete one song from it and
+imported the playlist again, the deleted song will still have the playlist set
+in its `subsonic_playlist` tag. To solve this problem one can use the `-d/--delete`
+flag. This resets all `subsonic_playlist` tag before importing playlists.
+
+Here's an example configuration with all the available options and their default values::
+
+    subsonicplaylist:
+        base_url: "https://your.subsonic.server"
+        delete: no
+        playlist_ids: []
+        playlist_names: []
+        username: ''
+        password: ''
+
+The `base_url`, `username`, and `password` options are required.
diff --git a/test/test_autotag.py b/test/test_autotag.py
index a11bc8fac..febd1641d 100644
--- a/test/test_autotag.py
+++ b/test/test_autotag.py
@@ -18,7 +18,6 @@
 from __future__ import division, absolute_import, print_function
 
 import re
-import copy
 import unittest
 
 from test import _common
@@ -106,9 +105,12 @@ def _make_item(title, track, artist=u'some artist'):
 
 def _make_trackinfo():
     return [
-        TrackInfo(u'one', None, artist=u'some artist', length=1, index=1),
-        TrackInfo(u'two', None, artist=u'some artist', length=1, index=2),
-        TrackInfo(u'three', None, artist=u'some artist', length=1, index=3),
+        TrackInfo(title=u'one', track_id=None, artist=u'some artist',
+                  length=1, index=1),
+        TrackInfo(title=u'two', track_id=None, artist=u'some artist',
+                  length=1, index=2),
+        TrackInfo(title=u'three', track_id=None, artist=u'some artist',
+                  length=1, index=3),
     ]
 
 
@@ -348,9 +350,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'some artist',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=False,
-            album_id=None,
-            artist_id=None,
+            va=False
         )
         self.assertEqual(self._dist(items, info), 0)
 
@@ -362,9 +362,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'some artist',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=False,
-            album_id=None,
-            artist_id=None,
+            va=False
         )
         dist = self._dist(items, info)
         self.assertNotEqual(dist, 0)
@@ -380,9 +378,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'someone else',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=False,
-            album_id=None,
-            artist_id=None,
+            va=False
         )
         self.assertNotEqual(self._dist(items, info), 0)
 
@@ -395,9 +391,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'should be ignored',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=True,
-            album_id=None,
-            artist_id=None,
+            va=True
         )
         self.assertEqual(self._dist(items, info), 0)
 
@@ -411,9 +405,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'should be ignored',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=True,
-            album_id=None,
-            artist_id=None,
+            va=True
         )
         info.tracks[0].artist = None
         info.tracks[1].artist = None
@@ -429,9 +421,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'some artist',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=True,
-            album_id=None,
-            artist_id=None,
+            va=True
         )
         self.assertNotEqual(self._dist(items, info), 0)
 
@@ -444,9 +434,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'some artist',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=False,
-            album_id=None,
-            artist_id=None,
+            va=False
         )
         dist = self._dist(items, info)
         self.assertTrue(0 < dist < 0.2)
@@ -460,9 +448,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'some artist',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=False,
-            album_id=None,
-            artist_id=None,
+            va=False
         )
         info.tracks[0].medium_index = 1
         info.tracks[1].medium_index = 2
@@ -479,9 +465,7 @@ class AlbumDistanceTest(_common.TestCase):
             artist=u'some artist',
             album=u'some album',
             tracks=_make_trackinfo(),
-            va=False,
-            album_id=None,
-            artist_id=None,
+            va=False
         )
         info.tracks[0].medium_index = 1
         info.tracks[1].medium_index = 2
@@ -503,9 +487,9 @@ class AssignmentTest(unittest.TestCase):
         items.append(self.item(u'three', 2))
         items.append(self.item(u'two', 3))
         trackinfo = []
-        trackinfo.append(TrackInfo(u'one', None))
-        trackinfo.append(TrackInfo(u'two', None))
-        trackinfo.append(TrackInfo(u'three', None))
+        trackinfo.append(TrackInfo(title=u'one'))
+        trackinfo.append(TrackInfo(title=u'two'))
+        trackinfo.append(TrackInfo(title=u'three'))
         mapping, extra_items, extra_tracks = \
             match.assign_items(items, trackinfo)
         self.assertEqual(extra_items, [])
@@ -522,9 +506,9 @@ class AssignmentTest(unittest.TestCase):
         items.append(self.item(u'three', 1))
         items.append(self.item(u'two', 1))
         trackinfo = []
-        trackinfo.append(TrackInfo(u'one', None))
-        trackinfo.append(TrackInfo(u'two', None))
-        trackinfo.append(TrackInfo(u'three', None))
+        trackinfo.append(TrackInfo(title=u'one'))
+        trackinfo.append(TrackInfo(title=u'two'))
+        trackinfo.append(TrackInfo(title=u'three'))
         mapping, extra_items, extra_tracks = \
             match.assign_items(items, trackinfo)
         self.assertEqual(extra_items, [])
@@ -540,9 +524,9 @@ class AssignmentTest(unittest.TestCase):
         items.append(self.item(u'one', 1))
         items.append(self.item(u'three', 3))
         trackinfo = []
-        trackinfo.append(TrackInfo(u'one', None))
-        trackinfo.append(TrackInfo(u'two', None))
-        trackinfo.append(TrackInfo(u'three', None))
+        trackinfo.append(TrackInfo(title=u'one'))
+        trackinfo.append(TrackInfo(title=u'two'))
+        trackinfo.append(TrackInfo(title=u'three'))
         mapping, extra_items, extra_tracks = \
             match.assign_items(items, trackinfo)
         self.assertEqual(extra_items, [])
@@ -558,8 +542,8 @@ class AssignmentTest(unittest.TestCase):
         items.append(self.item(u'two', 2))
         items.append(self.item(u'three', 3))
         trackinfo = []
-        trackinfo.append(TrackInfo(u'one', None))
-        trackinfo.append(TrackInfo(u'three', None))
+        trackinfo.append(TrackInfo(title=u'one'))
+        trackinfo.append(TrackInfo(title=u'three'))
         mapping, extra_items, extra_tracks = \
             match.assign_items(items, trackinfo)
         self.assertEqual(extra_items, [items[1]])
@@ -595,7 +579,8 @@ class AssignmentTest(unittest.TestCase):
         items.append(item(12, 186.45916150485752))
 
         def info(index, title, length):
-            return TrackInfo(title, None, length=length, index=index)
+            return TrackInfo(title=title, length=length,
+                             index=index)
         trackinfo = []
         trackinfo.append(info(1, u'Alone', 238.893))
         trackinfo.append(info(2, u'The Woman in You', 341.44))
@@ -638,8 +623,8 @@ class ApplyTest(_common.TestCase, ApplyTestUtil):
         self.items.append(Item({}))
         trackinfo = []
         trackinfo.append(TrackInfo(
-            u'oneNew',
-            u'dfa939ec-118c-4d0f-84a0-60f3d1e6522c',
+            title=u'oneNew',
+            track_id=u'dfa939ec-118c-4d0f-84a0-60f3d1e6522c',
             medium=1,
             medium_index=1,
             medium_total=1,
@@ -648,8 +633,8 @@ class ApplyTest(_common.TestCase, ApplyTestUtil):
             artist_sort='trackArtistSort',
         ))
         trackinfo.append(TrackInfo(
-            u'twoNew',
-            u'40130ed1-a27c-42fd-a328-1ebefb6caef4',
+            title=u'twoNew',
+            track_id=u'40130ed1-a27c-42fd-a328-1ebefb6caef4',
             medium=2,
             medium_index=1,
             index=2,
@@ -749,13 +734,13 @@ class ApplyTest(_common.TestCase, ApplyTestUtil):
         self.assertEqual(self.items[1].albumtype, 'album')
 
     def test_album_artist_overrides_empty_track_artist(self):
-        my_info = copy.deepcopy(self.info)
+        my_info = self.info.copy()
         self._apply(info=my_info)
         self.assertEqual(self.items[0].artist, 'artistNew')
         self.assertEqual(self.items[1].artist, 'artistNew')
 
     def test_album_artist_overridden_by_nonempty_track_artist(self):
-        my_info = copy.deepcopy(self.info)
+        my_info = self.info.copy()
         my_info.tracks[0].artist = 'artist1!'
         my_info.tracks[1].artist = 'artist2!'
         self._apply(info=my_info)
@@ -777,7 +762,7 @@ class ApplyTest(_common.TestCase, ApplyTestUtil):
         self.assertEqual(self.items[1].artist_sort, 'albumArtistSort')
 
     def test_full_date_applied(self):
-        my_info = copy.deepcopy(self.info)
+        my_info = self.info.copy()
         my_info.year = 2013
         my_info.month = 12
         my_info.day = 18
@@ -792,7 +777,7 @@ class ApplyTest(_common.TestCase, ApplyTestUtil):
         self.items.append(Item(year=1, month=2, day=3))
         self.items.append(Item(year=4, month=5, day=6))
 
-        my_info = copy.deepcopy(self.info)
+        my_info = self.info.copy()
         my_info.year = 2013
         self._apply(info=my_info)
 
@@ -812,7 +797,7 @@ class ApplyTest(_common.TestCase, ApplyTestUtil):
         self.assertEqual(self.items[0].day, 3)
 
     def test_data_source_applied(self):
-        my_info = copy.deepcopy(self.info)
+        my_info = self.info.copy()
         my_info.data_source = 'MusicBrainz'
         self._apply(info=my_info)
 
@@ -828,15 +813,15 @@ class ApplyCompilationTest(_common.TestCase, ApplyTestUtil):
         self.items.append(Item({}))
         trackinfo = []
         trackinfo.append(TrackInfo(
-            u'oneNew',
-            u'dfa939ec-118c-4d0f-84a0-60f3d1e6522c',
+            title=u'oneNew',
+            track_id=u'dfa939ec-118c-4d0f-84a0-60f3d1e6522c',
             artist=u'artistOneNew',
             artist_id=u'a05686fc-9db2-4c23-b99e-77f5db3e5282',
             index=1,
         ))
         trackinfo.append(TrackInfo(
-            u'twoNew',
-            u'40130ed1-a27c-42fd-a328-1ebefb6caef4',
+            title=u'twoNew',
+            track_id=u'40130ed1-a27c-42fd-a328-1ebefb6caef4',
             artist=u'artistTwoNew',
             artist_id=u'80b3cf5e-18fe-4c59-98c7-e5bb87210710',
             index=2,
@@ -874,7 +859,7 @@ class ApplyCompilationTest(_common.TestCase, ApplyTestUtil):
         self.assertFalse(self.items[1].comp)
 
     def test_va_flag_sets_comp(self):
-        va_info = copy.deepcopy(self.info)
+        va_info = self.info.copy()
         va_info.va = True
         self._apply(info=va_info)
         self.assertTrue(self.items[0].comp)
diff --git a/test/test_ui.py b/test/test_ui.py
index 110e80782..b1e7e8fad 100644
--- a/test/test_ui.py
+++ b/test/test_ui.py
@@ -22,7 +22,6 @@ import shutil
 import re
 import subprocess
 import platform
-from copy import deepcopy
 import six
 import unittest
 
@@ -1051,8 +1050,10 @@ class ShowChangeTest(_common.TestCase):
         self.items[0].track = 1
         self.items[0].path = b'/path/to/file.mp3'
         self.info = autotag.AlbumInfo(
-            u'the album', u'album id', u'the artist', u'artist id', [
-                autotag.TrackInfo(u'the title', u'track id', index=1)
+            album=u'the album', album_id=u'album id', artist=u'the artist',
+            artist_id=u'artist id', tracks=[
+                autotag.TrackInfo(title=u'the title', track_id=u'track id',
+                                  index=1)
             ]
         )
 
@@ -1136,7 +1137,9 @@ class SummarizeItemsTest(_common.TestCase):
         summary = commands.summarize_items([self.item], False)
         self.assertEqual(summary, u"1 items, F, 4kbps, 10:54, 987.0 B")
 
-        i2 = deepcopy(self.item)
+        # make a copy of self.item
+        i2 = self.item.copy()
+
         summary = commands.summarize_items([self.item, i2], False)
         self.assertEqual(summary, u"2 items, F, 4kbps, 21:48, 1.9 KiB")