Unless I'm misunderstanding the article, or your comment, the models were responsible for generating the music _videos_.
The music itself is Uptown Funk... which was a very successful song in 2014 (https://www.youtube.com/watch?v=OPf0YbXqDm0)
The videos are indeed awful though.
They're just saying that like Suno Music, if you look closely the cracks show. They're not saying the music is AI generated.
Yes, I know what the music is. The videos are awful. I meant that watching them is an equivalent experience to listening to music generated by Suno.