I love this! It's super chill and vibey :)
I saw your reddit post and had to try it out! My favorite has to be flight 4, the song from the trailer; It's a chill bop and is easy to get through. The last flight was, well... rough lol. All of the songs are great, they remind me of making random sounds and turning them into music.
If you wanted to expand on this, you could make a life system or maybe a high score system, accuracy bonuses... rhythm game stuff. I want this game to be seen by more people!
I recommend checking this thread out for more feedback: https://itch.io/board/255031/get-feedback