It can probably be mapped but as you say you need to have mapped movement and ability controls also. We don’t support mapping several controllers to one player but perhaps third party software can help you? Eg if you could redirect your rhythm controller to keyboard keys.

Oh come on... Yesterday I learned that new Taiko game on PC doesn't recognize any of the official and unofficial controllers.
Sure, I can use any input wrapper, joy2key, steam input thing, dstool etc, but in the end it's only adding to the input lag.