old_contents: from django.db import models
  from model_utils.models import TimeStampedModel
  
  
  class Artist(TimeStampedModel):
  
      """Music artist served over the API."""
  
      name = models.CharField(max_length=300, unique=True)
  
new_contents: from django.db import models
  from model_utils.models import TimeStampedModel
  
  
  class Artist(TimeStampedModel):
  
      """Music artist served over the API."""
  
      name = models.CharField(max_length=100, unique=True)
  
  
  class JamendoArtist(TimeStampedModel):
  
      """Music artist data stored from the Jamendo API."""
  
      id = models.IntegerField(primary_key=True)
      name = models.CharField(max_length=100, unique=True)
      website = models.URLField()
      joindate = models.DateField()
      image = models.URLField()
      shorturl = models.URLField()
      shareurl = models.URLField()
  
  
  class MagnatuneArtist(TimeStampedModel):
  
      """Music artist data stored from the Magnatune sqlite database."""
  
      artist = models.CharField(max_length=100, unique=True)
      description = models.TextField(max_length=500)
      bio = models.TextField(max_length=12000)
      homepage = models.CharField(max_length=100)
      bandphoto = models.CharField(max_length=100)
      city = models.CharField(max_length=50)
      state = models.CharField(max_length=50)
      country = models.CharField(max_length=50)
  
subject: Add models for Magnatune and Jamendo artists