I already suck at rhythm games, but putting 8 keys on it was tough! I appreciate that you added a picture of (presumably) you with the recommended keyboard posture xD. Marona looks like they belong in Rhythm Heaven. Maybe you should make it so that the number range is configurable? Like it can go from 1-8, or 3-10/0, stuff like that. Overall, this is honestly pretty cool! Congrats on the game!
Consider trying out my game as well! Thank you!