This seems to be one of the few open-weight models that isn't just another "text to audio" generator. You can take existing sheet music, convert it to ABC notation, and then experiment with various covers.

I don't have a ton of time right now to really mess around with it, but I took 15 minutes to run it on my Mac M1 with an old melody I wrote back in high school for an RPG I was writing in VB6 (dating myself a bit here).

If anyone wants to hear what it sounds like:

https://mordenstar.com/other/yue2-tests