This is getting scary... It's like replacing talent/skill/practice with some computer tweaking.
It still sounds... super thin... fake. The scary part to me is that it still sounds enough like music though. The "lump of clay" "vocalist" could be so, so far enough from actually being able to do that.
Then again, I was thinking something in this area could be a way to expand music, something new. Maybe the person generating things wouldn't have to be able to produce the end result themselves, if they could control a system that gets the product they want.
Add in things like auto-tune being pretty young... What could it evolve into in a hundred years?