Created the Artist, Album, and Song models under the homepage app

ejmejilla_music/homepage/models.py

+# <appname>/models.py
 from django.db import models
+from django.urls import reverse
 
-# Create your models here.
+
+class Artist(models.Model):
+    artist_name = models.CharField(max_length=100, unique=True)
+    monthly_listeners = models.IntegerField()
+    
+    def __str__(self):
+        return self.artist_name
+
+    def get_absolute_url(self):
+        return reverse('artist_detail', args=[str(self.artist_name)])
+
+
+class Album(models.Model):
+    album_name = models.CharField(max_length=100, unique=True)
+    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
+    description = models.CharField(max_length=500)
+    release_date = models.DateField()
+
+    def __str__(self):
+        return f"{self.artist}'s {self.album_name}"
+
+    def get_absolute_url(self):
+        return reverse('album_detail', args=[str(self.album_name)])
+
+class Song(models.Model):
+    song_title = models.CharField(max_length=100, unique=True)
+    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
+    album = models.ForeignKey(Album, on_delete=models.CASCADE)
+    song_length = models.IntegerField()
+
+    def __str__(self):
+        return f"{self.artist} - {self.song_title}"
+
+    def get_absolute_url(self):
+        return reverse('song_detail', args=[str(self.song_title)])