diff --git a/src/music_kraken/database/objects/metadata.py b/src/music_kraken/database/objects/metadata.py
index 5e45970..2e1f112 100644
--- a/src/music_kraken/database/objects/metadata.py
+++ b/src/music_kraken/database/objects/metadata.py
@@ -1,5 +1,5 @@
 from enum import Enum
-from typing import List
+from typing import List, Dict, Tuple
 from mutagen import id3
 
 from .parents import (
@@ -98,11 +98,20 @@ class Metadata:
     Shall only be read or edited via the Song object.
     call it like a dict to read/write values
     """
+    class FrameValue:
+        def __init__(self, values: list, modified_by: str) -> None:
+            """
+            Parameters:
+                values (list): the values.
+            """
+            pass
 
     def __init__(self, data: dict = {}) -> None:
         # this is pretty self-explanatory
         # the key is a 4 letter key from the id3 standards like TITL
+
         self.id3_attributes: Dict[str, list] = {}
+        self.
 
         # its a null byte for the later concatenation of text frames
         self.null_byte = "\x00"
diff --git a/src/music_kraken/database/objects/song.py b/src/music_kraken/database/objects/song.py
index 720771f..e3be420 100644
--- a/src/music_kraken/database/objects/song.py
+++ b/src/music_kraken/database/objects/song.py
@@ -208,18 +208,20 @@ class Song(DatabaseObject):
         self.metadata[ID3_MAPPING.FILE_WEBPAGE_URL.value] = source_obj.url
 
     def set_sources(self, source_list):
+        if source_list is None:
+            return
+
         self._sources = source_list
         for source in self._sources:
             source.add_song(self)
 
-        # self.metadata[ID3_MAPPING.FILE_WEBPAGE_URL.value] = [s.url for s in self._sources]
         self.metadata.add_many_id3_metadata_obj(self._sources)
 
     def set_album(self, album):
         if album is None:
             return
 
-        self.metadata.add_many_id3_metadata_obj()
+        self.metadata.add_id3_metadata_obj(album)
         self._album = album
 
     def get_metadata(self):
@@ -228,9 +230,6 @@ class Song(DatabaseObject):
     def has_isrc(self) -> bool:
         return self._isrc is not None
 
-    def add_source(self, source: Source):
-        pass
-
     def get_artist_names(self) -> List[str]:
         return self.artist_names
 
diff --git a/test.db b/test.db
index 820065b..5a22c67 100644
Binary files a/test.db and b/test.db differ