Thank you for this game! I'm always on the lookout for game to play with midi keyboard or controller, and it's always fun to try. I had a small issue when I played on my browser (both chrome and Firefox with jazz-midi) with my keyboard : every note played twice, once when pressed, and once when released. I found a workaround that was that I should press the key when a correponding note first appears, and release it when I see it a second time but it makes my fingers all confused 😅!
Thanks again for the game!