Hi, I'm not sure if you've looked into this or not, but another area that is interested in this sort of thing and might be very excited is musical gesture recognition.
Hey, I believe there are multiple things you could have meant. From the top of my head one thing that might be interesting would be an application that allows conductors to conduct a virtual orchestra. But there are other possibilities in this space too I'm sure! If you had something else in mind feel free to share.
I have not explored this space much so far as my focus is rather to build the infrastructure that enables such applications rather than building the applications myself.
