I feel it depends a lot more on how many songs you’d be posting compared to the other activity in c/music.

I’d say post some in the main comm, and if you really want to share a boatload with of songs (like multiple everyday for the foreseeable future) create your own community and cross post a select few to the main category.

It might be nice to have a community a little broader than just Chinese music, like for non western music or maybe East Asian music.