feat: tried improving fetching

music_kraken/objects/collection.py

@@ -143,7 +143,10 @@ class Collection(Generic[T]):
                 return
 
             existing_object.merge(__object, **kwargs)
-            self._map_element(existing_object)            
+            self._map_element(existing_object)         
+
+    def contains(self, __object: T) -> bool:
+        return self._find_object(__object) is not None
 
     def extend(self, __iterable: Optional[Generator[T, None, None]], **kwargs):
         if __iterable is None:

music_kraken/pages/youtube_music/_list_render.py

@@ -56,15 +56,24 @@ def music_responsive_list_item_renderer(renderer: dict) -> List[DatabaseObject]:
 
     for song in song_list:
         song.album_collection.extend(album_list)
-        song.main_artist_collection.extend(artist_list)
+        
+        for artist in artist_list:
+            existing_artist = song.main_artist_collection._find_object(artist)
+            
+            if existing_artist is None:
+                song.feature_artist_collection.append(artist)
+            else:
+                existing_artist.merge(artist)
+
+    if len(song_list) > 0:
+        return song_list
 
     for album in album_list:
         album.artist_collection.extend(artist_list)
 
-    if len(song_list) > 0:
-        return song_list
     if len(album_list) > 0:
         return album_list
+        
     if len(artist_list) > 0:
         return artist_list