Thanks for the feedback. I think I figured out what's wrong, I'll try to release a patch after the jam, I hope you try to play the new version. As for the full release, I'm not sure, it's hard for me to understand the target audience of this game. And what I want to add to the game may not please rhythm game players, but what they want may not please me :)
Don't worry, make the game you enjoy making and the market will follow, as long as you keep the game in line with your core ideas you're golden. As for your audience, it's me, I'm your audience, and I love good controlling rhythm games and I know there are lots of others. I believe you can make something you and in turn lots of people enjoy. :)