For sure! I think since it was a quick solo project for me with the focus of building the alt-controller I didn't take on a lot of gameplay elements. But I would be interested to develop further post Jam.
I figured a bunch of your time went into that controller which I must admit is pretty cool and way beyond my abilities to make. I wonder if it would be possible to use haptic feedback on the individual buttons to tell you which one to press to make a song and make it more game like. It would be a very unique game if you could pull off such a thing.