diff --git a/api/funkwhale_api/subsonic/serializers.py b/api/funkwhale_api/subsonic/serializers.py
index 5bc452886d7486bdc0ad7c1f5571ea69fc405895..6709930f56756abae175f1158bae0f9d94ec67b7 100644
--- a/api/funkwhale_api/subsonic/serializers.py
+++ b/api/funkwhale_api/subsonic/serializers.py
@@ -81,6 +81,10 @@ def get_track_data(album, track, tf):
         'artistId': album.artist.pk,
         'type': 'music',
     }
+    if tf.bitrate:
+        data['bitrate'] = int(tf.bitrate/1000)
+    if tf.size:
+        data['size'] = tf.size
     if album.release_date:
         data['year'] = album.release_date.year
     return data
@@ -211,5 +215,9 @@ def get_music_directory_data(artist):
             'parent': artist.id,
             'type': 'music',
         }
+        if tf.bitrate:
+            td['bitrate'] = int(tf.bitrate/1000)
+        if tf.size:
+            td['size'] = tf.size
         data['child'].append(td)
     return data
diff --git a/api/tests/subsonic/test_serializers.py b/api/tests/subsonic/test_serializers.py
index 6da9dd12e2e273643cf78ec0410535e77891fdad..ad9f739a1dd63ae2036142b2bdab149dc9e63635 100644
--- a/api/tests/subsonic/test_serializers.py
+++ b/api/tests/subsonic/test_serializers.py
@@ -77,7 +77,8 @@ def test_get_album_serializer(factories):
     artist = factories['music.Artist']()
     album = factories['music.Album'](artist=artist)
     track = factories['music.Track'](album=album)
-    tf = factories['music.TrackFile'](track=track)
+    tf = factories['music.TrackFile'](
+        track=track, bitrate=42000, duration=43, size=44)
 
     expected = {
         'id': album.pk,
@@ -98,7 +99,9 @@ def test_get_album_serializer(factories):
                 'year': track.album.release_date.year,
                 'contentType': tf.mimetype,
                 'suffix': tf.extension or '',
-                'duration': tf.duration or 0,
+                'bitrate': 42,
+                'duration': 43,
+                'size': 44,
                 'created': track.creation_date,
                 'albumId': album.pk,
                 'artistId': artist.pk,
@@ -177,7 +180,8 @@ def test_playlist_detail_serializer(factories):
 
 def test_directory_serializer_artist(factories):
     track = factories['music.Track']()
-    tf = factories['music.TrackFile'](track=track)
+    tf = factories['music.TrackFile'](
+        track=track, bitrate=42000, duration=43, size=44)
     album = track.album
     artist = track.artist
 
@@ -195,7 +199,9 @@ def test_directory_serializer_artist(factories):
             'year': track.album.release_date.year,
             'contentType': tf.mimetype,
             'suffix': tf.extension or '',
-            'duration': tf.duration or 0,
+            'bitrate': 42,
+            'duration': 43,
+            'size': 44,
             'created': track.creation_date,
             'albumId': album.pk,
             'artistId': artist.pk,