3 files changed, 5 insertions, 2 deletions
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs b/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
index a0aae8769..f3873775b 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
@@ -21,6 +21,7 @@ namespace MediaBrowser.Controller.Entities.Audio
     /// <summary>
     /// Class MusicAlbum.
     /// </summary>
+    [Common.RequiresSourceSerialisation]
     public class MusicAlbum : Folder, IHasAlbumArtist, IHasArtist, IHasMusicGenres, IHasLookupInfo<AlbumInfo>, IMetadataContainer
     {
         public MusicAlbum()
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs b/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
index 1ab6c9706..537550925 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
@@ -21,6 +21,7 @@ namespace MediaBrowser.Controller.Entities.Audio
     /// <summary>
     /// Class MusicArtist.
     /// </summary>
+    [Common.RequiresSourceSerialisation]
     public class MusicArtist : Folder, IItemByName, IHasMusicGenres, IHasDualAccess, IHasLookupInfo<ArtistInfo>
     {
         [JsonIgnore]
@@ -84,7 +85,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             return !IsAccessedByName;
         }
 
-        public IList<BaseItem> GetTaggedItems(InternalItemsQuery query)
+        public IReadOnlyList<BaseItem> GetTaggedItems(InternalItemsQuery query)
         {
             if (query.IncludeItemTypes.Length == 0)
             {
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs b/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
index 7448d02ea..65669e680 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
@@ -14,6 +14,7 @@ namespace MediaBrowser.Controller.Entities.Audio
     /// <summary>
     /// Class MusicGenre.
     /// </summary>
+    [Common.RequiresSourceSerialisation]
     public class MusicGenre : BaseItem, IItemByName
     {
         [JsonIgnore]
@@ -64,7 +65,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             return true;
         }
 
-        public IList<BaseItem> GetTaggedItems(InternalItemsQuery query)
+        public IReadOnlyList<BaseItem> GetTaggedItems(InternalItemsQuery query)
         {
             query.GenreIds = new[] { Id };
             query.IncludeItemTypes = new[] { BaseItemKind.MusicVideo, BaseItemKind.Audio, BaseItemKind.MusicAlbum, BaseItemKind.MusicArtist };