Yeah, we have never actually put music into any of our gamejam games before, always put it at the lowest priority and never had time, this time we had a sound guy though, but couldn't figure it out before the deadline.
Glad you liked the aspect ratio, it was one of the main ideas we had for how to not make a generic danmaku game.
If ya wanna talk to either me or aeon(other programmer) you can find us in the touhou jam discord under our same names.