added ModelAdmins for Song, Artist, and Album models

homepage/admin.py

 from django.contrib import admin
+from .models import Artist, Album, Song
 
 # Register your models here.
+class ArtistAdmin(admin.ModelAdmin):
+    list_display = ('artist_name', 'birth_name', 'monthly_listeners',)
+    search_fields = ('artist_name', 'birth_name',)
+    list_filter = ('artist_name', 'birth_name',)
+
+class AlbumAdmin(admin.ModelAdmin):
+    list_display = ('album_name', 'description', 'release_date',
+                    'label', 'song_count')
+    search_fields = ('album_name', 'description', 'label',)
+    list_filter = ('album_name',)
+
+class SongAdmin(admin.ModelAdmin):
+    list_display = ('song_title','song_length', 'lyrics', 'music_video',)
+    search_fields = ('song_title', 'lyrics',)
+    list_filter = ('song_title',)
+
+admin.site.register(Artist, ArtistAdmin)
+admin.site.register(Album, AlbumAdmin)
+admin.site.register(Song, SongAdmin)
\ No newline at end of file