Really cool concept! I love the mood and aesthetic.
My only issue is that it's too easy to cheat by continuously tapping on the 16ths, since there's no penalty for extra taps (that I can tell).
Thanks for the feedback - and especially for pointing out that bug! I had no idea about this (in earlier releases, there indeed was a penalty for extra taps... I better fix this immediately...)
It's now fixed in every version except the linux build, it appears to take a bit for me to get the linux build script back to working again...