updated models.py

included Artist, Album, and Song classes for the database and its respective properties

layvillanueva_music/homepage/models.py

 from django.db import models
 
 # Create your models here.
+class Artist(models.Model):
+    artist_name = models.CharField(max_length=255, unique=True)
+    monthly_listeners = models.IntegerField()
+
+    def __str__(self):
+        return '{} - {} monthly listeners'.format(self.artist_name,self.monthly_listeners)
+
+
+class Album(models.Model):
+    album_name = models.CharField(max_length=255)
+    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
+    description = models.CharField(max_length=999)
+    release_date = models.DateField()
+
+    def __str__(self):
+        return '{} by {} released on {} is {}'.format(self.album_name,self.artist,
+        self.release_date,self.description)
+
+class Song(models.Model):
+    song_title = models.CharField(max_length=255)
+    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
+    album = models.ForeignKey(Album, on_delete=models.CASCADE)
+    song_length = models.DurationField()
+
+    def __str__(self):
+        return '{} by {} from {} is {} long.'.format(self.song_title,self.artist,
+        self.album,self.song_length)