protected function createSampleMediaSet()
{
$artist = factory(Artist::class)->create();
// Sample 3 albums
$albums = factory(Album::class, 3)->create(['artist_id' => $artist->id]);
// 7-15 songs per albums
foreach ($albums as $album) {
factory(Song::class, rand(7, 15))->create(['album_id' => $album->id]);
}
}