That's some great adaptive music! It's very satisfying to hear the song progression. Am I wrong to think there was supposed to be one last instrument at the end?^^
The game physics are not easy to tackle. Especially at the beginning, I had a hard time finishing the tutorial (the very first double jump gave me some difficulties). But once you obtain several bards, it makes more sense and the game is less demanding. Apart from some specific sections on the last level that I had troubles getting past, the game is very enjoyable. Congrats for making this neat entry!