Thanks for taking the time, Edwin! You are right about the not-so-responsive rage system (it indeed waits for the end of the current loop intentionally), we originally wanted to start a drum fill when a player activates rage (a different one depending on how many bars are remaining until the end of the current "normal music" loop) and enable rage during the fill as well, but we didn't have time to implement it. We'll probably do an update though. We kinda lost track of time implementing the skill system so indeed the track switching between normal/rage is the only adaptive music mechanic in the game. Anyway, we've learnt a lot and will definitely update the game after the jam as well :)