diff --git a/src/music_kraken/pages/html/musify/album_overview.html b/documentation/html/musify/album_overview.html
similarity index 100%
rename from src/music_kraken/pages/html/musify/album_overview.html
rename to documentation/html/musify/album_overview.html
diff --git a/src/music_kraken/__init__.py b/src/music_kraken/__init__.py
index 03e31c6..d00eb2b 100644
--- a/src/music_kraken/__init__.py
+++ b/src/music_kraken/__init__.py
@@ -38,18 +38,18 @@ logging.getLogger("musicbrainzngs").setLevel(logging.WARNING)
 musicbrainzngs.set_useragent("metadata receiver", "0.1", "https://github.com/HeIIow2/music-downloader")
 
 
-def get_options_from_query(query: str) -> List[objects.MusicObject]:
+def get_options_from_query(query: str) -> List[objects.DatabaseObject]:
     options = []
     for MetadataPage in pages.MetadataPages:
         options.extend(MetadataPage.search_by_query(query=query))
     return options
 
-def get_options_from_option(option: objects.MusicObject) -> List[objects.MusicObject]:
+def get_options_from_option(option: objects.DatabaseObject) -> List[objects.DatabaseObject]:
     for MetadataPage in pages.MetadataPages:
         option = MetadataPage.fetch_details(option, flat=False)
     return option.get_options()
 
-def print_options(options: List[objects.MusicObject]):
+def print_options(options: List[objects.DatabaseObject]):
     print("\n".join([f"{str(j).zfill(2)}: {i.get_option_string()}" for j, i in enumerate(options)]))
 
 def cli():
diff --git a/src/music_kraken/database/__init__.py b/src/music_kraken/database/__init__.py
index 5a22e6a..e69de29 100644
--- a/src/music_kraken/database/__init__.py
+++ b/src/music_kraken/database/__init__.py
@@ -1,19 +0,0 @@
-from . import database
-from .. import objects
-
-MusicObject = objects.MusicObject
-
-ID3Timestamp = objects.ID3Timestamp
-SourceTypes = objects.SourceTypes
-SourcePages = objects.SourcePages
-Song = objects.Song
-Source = objects.Source
-Target = objects.Target
-Lyrics = objects.Lyrics
-Album = objects.Album
-Artist = objects.Artist
-
-FormattedText = objects.FormattedText
-
-Database = database.Database
-# cache = temp_database.TempDatabase()
diff --git a/src/music_kraken/database/database.py b/src/music_kraken/database/database.py
index d20e793..0120a89 100644
--- a/src/music_kraken/database/database.py
+++ b/src/music_kraken/database/database.py
@@ -130,7 +130,7 @@ class Database:
             
             print(model._meta.fields)
 
-    def push(self, database_object: objects.MusicObject):
+    def push(self, database_object: objects.DatabaseObject):
         """
         Adds a new music object to the database using the corresponding method from the `write` session.
         When possible, rather use the `push_many` function.
@@ -153,7 +153,7 @@ class Database:
             if isinstance(database_object, objects.Artist):
                 return writing_session.add_artist(database_object)
 
-    def push_many(self, database_objects: List[objects.MusicObject]) -> None:
+    def push_many(self, database_objects: List[objects.DatabaseObject]) -> None:
         """
         Adds a list of MusicObject instances to the database.
         This function sends only needs one querry for each type of table added.
diff --git a/src/music_kraken/database/object_cache.py b/src/music_kraken/database/object_cache.py
index a9c924c..9251dcd 100644
--- a/src/music_kraken/database/object_cache.py
+++ b/src/music_kraken/database/object_cache.py
@@ -2,7 +2,7 @@ from collections import defaultdict
 from typing import Dict, List, Optional
 import weakref
 
-from src.music_kraken.objects import MusicObject
+from src.music_kraken.objects import DatabaseObject
 
 """
 This is a cache for the objects, that et pulled out of the database.
@@ -32,14 +32,14 @@ class ObjectCache:
     :method extent: Add a list of MusicObjects to the cache.
     :method remove: Remove a MusicObject from the cache by its id.
     :method get: Retrieve a MusicObject from the cache by its id.    """
-    object_to_id: Dict[str, MusicObject]
+    object_to_id: Dict[str, DatabaseObject]
     weakref_map: Dict[weakref.ref, str]
 
     def __init__(self) -> None:
         self.object_to_id = dict()
         self.weakref_map = defaultdict()
 
-    def exists(self, music_object: MusicObject) -> bool:
+    def exists(self, music_object: DatabaseObject) -> bool:
         """
         Check if a MusicObject with the same id already exists in the cache.
 
@@ -60,7 +60,7 @@ class ObjectCache:
         data_id = self.weakref_map.pop(weakref_)
         self.object_to_id.pop(data_id)
 
-    def append(self, music_object: MusicObject) -> bool:
+    def append(self, music_object: DatabaseObject) -> bool:
         """
         Add a MusicObject to the cache.
 
@@ -75,7 +75,7 @@ class ObjectCache:
 
         return False
 
-    def extent(self, music_object_list: List[MusicObject]):
+    def extent(self, music_object_list: List[DatabaseObject]):
         """
         adjacent to the extent method of list, this appends n Object
         """
@@ -93,7 +93,7 @@ class ObjectCache:
             self.weakref_map.pop(weakref.ref(data))
             self.object_to_id.pop(_id)
 
-    def __getitem__(self, item) -> Optional[MusicObject]:
+    def __getitem__(self, item) -> Optional[DatabaseObject]:
         """
         this returns the data obj
         :param item: the id of the music object
@@ -102,5 +102,5 @@ class ObjectCache:
 
         return self.object_to_id.get(item)
 
-    def get(self, _id: str) -> Optional[MusicObject]:
+    def get(self, _id: str) -> Optional[DatabaseObject]:
         return self.__getitem__(_id)
diff --git a/src/music_kraken/objects/__init__.py b/src/music_kraken/objects/__init__.py
index 80e4064..fa7ba07 100644
--- a/src/music_kraken/objects/__init__.py
+++ b/src/music_kraken/objects/__init__.py
@@ -9,7 +9,7 @@ from . import (
     collection
 )
 
-MusicObject = parents.DatabaseObject
+DatabaseObject = parents.DatabaseObject
 
 ID3Mapping = metadata.Mapping
 ID3Timestamp = metadata.ID3Timestamp
diff --git a/src/music_kraken/objects/collection.py b/src/music_kraken/objects/collection.py
index bfb5b90..6009200 100644
--- a/src/music_kraken/objects/collection.py
+++ b/src/music_kraken/objects/collection.py
@@ -1,9 +1,16 @@
 from typing import List, Iterable, Dict
 from collections import defaultdict
+from dataclasses import dataclass
 
 from .parents import DatabaseObject
 
 
+@dataclass
+class AppendResult:
+    was_in_collection: bool
+    current_element: DatabaseObject
+
+
 class Collection:
     """
     This a class for the iterables
@@ -14,12 +21,12 @@ class Collection:
     _by_url: dict
     _by_attribute: dict
 
-    def __init__(self, data: List[DatabaseObject] = None, element_type = None, *args, **kwargs) -> None:
+    def __init__(self, data: List[DatabaseObject] = None, element_type=None, *args, **kwargs) -> None:
         # Attribute needs to point to
         self.element_type = element_type
-        
+
         self._data: List[DatabaseObject] = list()
-        
+
         """
         example of attribute_to_object_map
         the song objects are references pointing to objects
@@ -34,7 +41,7 @@ class Collection:
         """
         self._attribute_to_object_map: Dict[str, Dict[object, DatabaseObject]] = defaultdict(dict)
         self._used_ids: set = set()
-        
+
         if data is not None:
             self.extend(data, merge_on_conflict=True)
 
@@ -47,14 +54,14 @@ class Collection:
                 continue
 
             self._attribute_to_object_map[name][value] = element
-            
+
         self._used_ids.add(element.id)
-        
+
     def unmap_element(self, element: DatabaseObject):
         for name, value in element.indexing_values:
             if value is None:
                 continue
-            
+
             if value in self._attribute_to_object_map[name]:
                 if element is self._attribute_to_object_map[name][value]:
                     try:
@@ -62,7 +69,8 @@ class Collection:
                     except KeyError:
                         pass
 
-    def append(self, element: DatabaseObject, merge_on_conflict: bool = True, merge_into_existing: bool = True) -> DatabaseObject:
+    def append(self, element: DatabaseObject, merge_on_conflict: bool = True,
+               merge_into_existing: bool = True) -> AppendResult:
         """
         :param element:
         :param merge_on_conflict:
@@ -77,41 +85,39 @@ class Collection:
         for name, value in element.indexing_values:
             if value in self._attribute_to_object_map[name]:
                 existing_object = self._attribute_to_object_map[name][value]
-                
+
                 if not merge_on_conflict:
-                    return existing_object
-                    
+                    return AppendResult(True, existing_object)
+
                 # if the object does already exist
                 # thus merging and don't add it afterwards
                 if merge_into_existing:
                     existing_object.merge(element)
                     # in case any relevant data has been added (e.g. it remaps the old object)
                     self.map_element(existing_object)
-                    return existing_object
-                
+                    return AppendResult(True, existing_object)
+
                 element.merge(existing_object)
-                
+
                 exists_at = self._data.index(existing_object)
                 self._data[exists_at] = element
-                
+
                 self.unmap_element(existing_object)
                 self.map_element(element)
-                return element
+                return AppendResult(True, existing_object)
 
         self._data.append(element)
         self.map_element(element)
-        
-        return element
-    
-    def append_is_already_in_collection(self, element: DatabaseObject, merge_on_conflict: bool = True, merge_into_existing: bool = True) -> bool:
-        object_representing_the_data = self.append(element, merge_on_conflict=merge_on_conflict, merge_into_existing=merge_into_existing)
 
-    def extend(self, element_list: Iterable[DatabaseObject], merge_on_conflict: bool = True):
+        return AppendResult(False, element)
+
+    def extend(self, element_list: Iterable[DatabaseObject], merge_on_conflict: bool = True,
+               merge_into_existing: bool = True):
         for element in element_list:
-            self.append(element, merge_on_conflict=merge_on_conflict)
+            self.append(element, merge_on_conflict=merge_on_conflict, merge_into_existing=merge_into_existing)
 
     def __iter__(self):
-        for element in self._data:
+        for element in self.shallow_list:
             yield element
 
     def __str__(self) -> str:
@@ -120,11 +126,22 @@ class Collection:
     def __len__(self) -> int:
         return len(self._data)
 
-    def __getitem__(self, item):
-        if type(item) != int:
+    def __getitem__(self, key):
+        if type(key) != int:
             return ValueError("key needs to be an integer")
 
-        return self._data[item]
+        return self._data[key]
+
+    def __setitem__(self, key, value: DatabaseObject):
+        print(key, value)
+        if type(key) != int:
+            return ValueError("key needs to be an integer")
+
+        old_item = self._data[key]
+        self.unmap_element(old_item)
+        self.map_element(value)
+
+        self._data[key] = value
 
     @property
     def shallow_list(self) -> List[DatabaseObject]:
diff --git a/src/music_kraken/objects/parents.py b/src/music_kraken/objects/parents.py
index 855ba71..2152677 100644
--- a/src/music_kraken/objects/parents.py
+++ b/src/music_kraken/objects/parents.py
@@ -99,6 +99,7 @@ class DatabaseObject:
         pass
 
 
+
 class MainObject(DatabaseObject):
     """
     This is the parent class for all "main" data objects:
diff --git a/src/music_kraken/pages/abstract.py b/src/music_kraken/pages/abstract.py
index a5cae98..dc916e3 100644
--- a/src/music_kraken/pages/abstract.py
+++ b/src/music_kraken/pages/abstract.py
@@ -1,11 +1,8 @@
-from typing import Optional, Union, Type
+from typing import Optional, Union, Type, Dict
 import requests
 import logging
 
-LOGGER = logging.getLogger("this shouldn't be used")
-
 from ..utils import shared
-
 from ..objects import (
     Song,
     Source,
@@ -13,13 +10,15 @@ from ..objects import (
     Artist,
     Lyrics,
     Target,
-    MusicObject,
+    DatabaseObject,
     Options,
     SourcePages,
     Collection,
     Label
 )
 
+LOGGER = logging.getLogger("this shouldn't be used")
+
 
 class Page:
     """
@@ -139,7 +138,7 @@ class Page:
         return Options()
 
     @classmethod
-    def fetch_details(cls, music_object: Union[Song, Album, Artist, Label], stop_at_level: int = 1) -> MusicObject:
+    def fetch_details(cls, music_object: Union[Song, Album, Artist, Label], stop_at_level: int = 1) -> DatabaseObject:
         """
         when a music object with laccing data is passed in, it returns
         the SAME object **(no copy)** with more detailed data.
@@ -156,21 +155,28 @@ class Page:
         :return detailed_music_object: IT MODIFIES THE INPUT OBJ
         """
         
-        new_music_object: MusicObject = type(music_object).__init__()
-        
+        new_music_object: DatabaseObject = type(music_object)()
+
         source: Source
         for source in music_object.source_collection:
-            new_music_object.merge(cls.fetch_object_from_source(source=source, obj_type=type(music_object), stop_at_level=stop_at_level))
+            new_music_object.merge(cls._fetch_object_from_source(source=source, obj_type=type(music_object), stop_at_level=stop_at_level))
 
+        collections = {
+            Label: Collection(element_type=Label),
+            Artist: Collection(element_type=Artist),
+            Album: Collection(element_type=Album),
+            Song: Collection(element_type=Song)
+        }
 
+        cls._clean_music_object(new_music_object, collections)
         
         music_object.merge(new_music_object)            
-        music_object.compile()
+        # music_object.compile()
 
         return music_object
 
     @classmethod
-    def fetch_object_from_source(cls, source: Source, obj_type: Union[Type[Song], Type[Album], Type[Artist], Type[Label]], stop_at_level: int = 1):
+    def _fetch_object_from_source(cls, source: Source, obj_type: Union[Type[Song], Type[Album], Type[Artist], Type[Label]], stop_at_level: int = 1):
         if obj_type == Artist:
             return cls.fetch_artist_from_source(source=source, stop_at_level=stop_at_level)
         
@@ -183,6 +189,54 @@ class Page:
         if obj_type == Label:
             return cls.fetch_label_from_source(source=source, stop_at_level=stop_at_level)
 
+    @classmethod
+    def _clean_music_object(cls, music_object: Union[Label, Album, Artist, Song], collections: Dict[Union[Type[Song], Type[Album], Type[Artist], Type[Label]], Collection]):
+        if type(music_object) == Label:
+            return cls._clean_label(label=music_object, collections=collections)
+        if type(music_object) == Artist:
+            return cls._clean_artist(artist=music_object, collections=collections)
+        if type(music_object) == Album:
+            return cls._clean_album(album=music_object, collections=collections)
+        if type(music_object) == Song:
+            return cls._clean_song(song=music_object, collections=collections)
+
+    @classmethod
+    def _clean_collection(cls, collection: Collection, collection_dict: Dict[Union[Type[Song], Type[Album], Type[Artist], Type[Label]], Collection]):
+        if collection.element_type not in collection_dict:
+            return
+
+        for i, element in enumerate(collection):
+            r = collection_dict[collection.element_type].append(element)
+            if not r.was_in_collection:
+                cls._clean_music_object(r.current_element, collection_dict)
+                continue
+
+            collection[i] = r.current_element
+            cls._clean_music_object(r.current_element, collection_dict)
+
+    @classmethod
+    def _clean_label(cls, label: Label, collections: Dict[Union[Type[Song], Type[Album], Type[Artist], Type[Label]], Collection]):
+        cls._clean_collection(label.current_artist_collection, collections)
+        cls._clean_collection(label.album_collection, collections)
+
+    @classmethod
+    def _clean_artist(cls, artist: Artist, collections: Dict[Union[Type[Song], Type[Album], Type[Artist], Type[Label]], Collection]):
+        cls._clean_collection(artist.main_album_collection, collections)
+        cls._clean_collection(artist.feature_song_collection, collections)
+        cls._clean_collection(artist.label_collection, collections)
+
+    @classmethod
+    def _clean_album(cls, album: Album, collections: Dict[Union[Type[Song], Type[Album], Type[Artist], Type[Label]], Collection]):
+        cls._clean_collection(album.label_collection, collections)
+        cls._clean_collection(album.song_collection, collections)
+        cls._clean_collection(album.artist_collection, collections)
+
+    @classmethod
+    def _clean_song(cls, song: Song, collections: Dict[Union[Type[Song], Type[Album], Type[Artist], Type[Label]], Collection]):
+        cls._clean_collection(song.album_collection, collections)
+        cls._clean_collection(song.feature_artist_collection, collections)
+        cls._clean_collection(song.main_artist_collection, collections)
+
     @classmethod
     def fetch_song_from_source(cls, source: Source, stop_at_level: int = 1) -> Song:
         return Song()
@@ -195,6 +249,7 @@ class Page:
     @classmethod
     def fetch_artist_from_source(cls, source: Source, stop_at_level: int = 1) -> Artist:
         return Artist()
-    
-    def fetch_label_from_source(source: Source, stop_at_level: int = 1) -> Label:
+
+    @classmethod
+    def fetch_label_from_source(cls, source: Source, stop_at_level: int = 1) -> Label:
         return Label()
diff --git a/src/music_kraken/pages/encyclopaedia_metallum.py b/src/music_kraken/pages/encyclopaedia_metallum.py
index f226303..987d6c9 100644
--- a/src/music_kraken/pages/encyclopaedia_metallum.py
+++ b/src/music_kraken/pages/encyclopaedia_metallum.py
@@ -9,7 +9,7 @@ from ..utils.shared import (
 
 from .abstract import Page
 from ..objects import (
-    MusicObject,
+    DatabaseObject,
     Artist,
     Source,
     SourcePages,
diff --git a/src/music_kraken/pages/musify.py b/src/music_kraken/pages/musify.py
index e874ca7..a78ed93 100644
--- a/src/music_kraken/pages/musify.py
+++ b/src/music_kraken/pages/musify.py
@@ -14,7 +14,7 @@ from ..utils.shared import (
 
 from .abstract import Page
 from ..objects import (
-    MusicObject,
+    DatabaseObject,
     Artist,
     Source,
     SourcePages,
@@ -545,7 +545,7 @@ class Musify(Page):
         ))
 
     @classmethod
-    def get_discography(cls, url: MusifyUrl, artist_name: str = None, flat=False) -> List[Album]:
+    def get_discography(cls, url: MusifyUrl, artist_name: str = None, stop_at_level: int = 1) -> List[Album]:
         """
         POST https://musify.club/artist/filteralbums
         ArtistID: 280348
@@ -570,9 +570,9 @@ class Musify(Page):
         for card_soup in soup.find_all("div", {"class": "card"}):
             new_album: Album = cls.parse_album_card(card_soup, artist_name)
             album_source: Source
-            if not flat:
+            if stop_at_level > 1:
                 for album_source in new_album.source_collection.get_sources_from_page(cls.SOURCE_TYPE):
-                    new_album.merge(cls.fetch_album_from_source(album_source))
+                    new_album.merge(cls.fetch_album_from_source(album_source, stop_at_level=stop_at_level-1))
                     
             discography.append(new_album)
 
@@ -709,7 +709,7 @@ class Musify(Page):
         )
 
     @classmethod
-    def fetch_artist_from_source(cls, source: Source, flat: bool = False) -> Artist:
+    def fetch_artist_from_source(cls, source: Source, stop_at_level: int = 1) -> Artist:
         """
         fetches artist from source
 
@@ -719,7 +719,7 @@ class Musify(Page):
 
         Args:
             source (Source): the source to fetch
-            flat (bool, optional): if it is false, every album from discograohy will be fetched. Defaults to False.
+            stop_at_level: int = 1: if it is false, every album from discograohy will be fetched. Defaults to False.
 
         Returns:
             Artist: the artist fetched
@@ -851,7 +851,7 @@ class Musify(Page):
         )
 
     @classmethod
-    def fetch_album_from_source(cls, source: Source, flat: bool = False) -> Album:
+    def fetch_album_from_source(cls, source: Source, stop_at_level: int = 1) -> Album:
         """
         fetches album from source:
         eg. 'https://musify.club/release/linkin-park-hybrid-theory-2000-188'
@@ -861,8 +861,8 @@ class Musify(Page):
         [] attributes
         [] ratings
 
+        :param stop_at_level:
         :param source:
-        :param flat:
         :return:
         """
         album = Album(title="Hi :)")
diff --git a/src/musify_search.py b/src/musify_search.py
index 1dbdb68..63a23bd 100644
--- a/src/musify_search.py
+++ b/src/musify_search.py
@@ -22,9 +22,15 @@ def fetch_album():
                                     "https://musify.club/release/linkin-park-hybrid-theory-2000-188")]
     )
 
-    album = Musify.fetch_details(album)
+    album: objects.Album = Musify.fetch_details(album)
     print(album.options)
 
+    song: objects.Song
+    for artist in album.artist_collection:
+        print(artist.id, artist.name)
+    for song in album.song_collection:
+        for artist in song.main_artist_collection:
+            print(artist.id, artist.name)
 
 if __name__ == "__main__":
     fetch_album()