Sick entry, nice job solo dev!! Love your central mechanic, fusing a platformer with a rhythm game is something I had never seen before but after playing it, the mix makes perfect sense. I liked the floatiness of the player controller because it made for more forgiving platforming and let me focus instead on the patterns which is a very good design choice. I agree with some others about the difficulty it feels a bit too challenging. I think ramping up the difficulty more slowly would have helped a lot. For example, the 1st level should be maybe 2 or 3 notes just to introduce the concept, then 2nd level 2 or 3 notes but add the ground pound mechanic, then 3rd level could be the level you start the game with currently. As it is now it gets way to hard to quickly. The central gameplay mechanic is brilliant though and super unique and I found myself pushing through the difficulty because I was enjoying myself so much. It's a good take on the theme too. I think the art could be a bit more cohesive and toned down a tad as well. Overall, I think you have a really unique and fun to play entry, that is a great job for one person in one week!! Keep it up