diff --git a/beets/autotag/hooks.py b/beets/autotag/hooks.py
index d15cba269..ec7047b7c 100644
--- a/beets/autotag/hooks.py
+++ b/beets/autotag/hooks.py
@@ -72,8 +72,8 @@ class AlbumInfo(object):
     - ``data_source``: The original data source (MusicBrainz, Discogs, etc.)
     - ``data_url``: The data source release URL.
 
-    The fields up through ``tracks`` are required. The others are
-    optional and may be None.
+    ``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,
diff --git a/beetsplug/spotify.py b/beetsplug/spotify.py
index b94d0e8e6..75f2c8523 100644
--- a/beetsplug/spotify.py
+++ b/beetsplug/spotify.py
@@ -205,6 +205,7 @@ class SpotifyPlugin(BeetsPlugin):
             month=month,
             day=day,
             label=response_data['label'],
+            mediums=max(medium_totals.keys()),
             data_source='Spotify',
             data_url=response_data['external_urls']['spotify'],
         )
@@ -286,8 +287,6 @@ class SpotifyPlugin(BeetsPlugin):
             if not artist_id:
                 artist_id = artist['id']
             name = artist['name']
-            # Strip disambiguation number.
-            name = re.sub(r' \(\d+\)$', '', name)
             # Move articles to the front.
             name = re.sub(r'^(.*?), (a|an|the)$', r'\2 \1', name, flags=re.I)
             artist_names.append(name)