Once the voting period ends we'll start updating it with different improvements, like a better & animated background asset, improved synchronization, extra animations for the different key presses or when bad dudes appears to fight. I didn't want to include audio feedback for presses because since they are frequent they'd would overlap the music with too repetitive and intrusive sounds. And well, I didn't have resources to do that audio :) In any case I'll investigate how real, proper music games address this audio feedback. Thanks for the feedback, I'll take note.