The plan is to have a rendered piano. What can be done in terms of tracking will depend on the headset used. oculus seems to be getting really close to having hand/finger tracking down using the headset cameras. Will probably be the best case scenario.
The valve index has the front usb connection that can accommodate a leap motion. I don’t really want people to have to go out and buy another accessory though. Still debating about what can be done there. There are definitely other options.