I think it will work for mainstream pop hits. There is already software used to determine if a song can be a hit or not. And with almost all mainstream hit songs being so similar in melody and structure (and with simple lame lyrics) I see it is perfectly possible for a machine to create songs that will be popular. It would be interesting to see that!
I Knew Someone would do it One Day
I’m off topic again, but I started a thread about AI that you might find interesting.
Fail!! He should’ve done a cover of “I just called to say I love you”