registered the 3 models

nishaespera_music/homepage/admin.py

 from django.contrib import admin
 
+from .models import Artist, Album, Song
+
 # Register your models here.
 
 class ArtistAdmin(admin.ModelAdmin):
@@ -18,4 +20,8 @@ class SongAdmin(admin.ModelAdmin):
     model = Song
     list_display = ("song_title", "song_length", "lyrics", "music_video")
     search_fields = ["song_title", "lyrics"]
-    list_filter = ("song_title",)
\ No newline at end of file
+    list_filter = ("song_title",)
+
+admin.site.register(Artist)
+admin.site.register(Album)
+admin.site.register(Song)
\ No newline at end of file