I've enjoyed, well not really, controls are hard as they supposed to be.
I miss that the doctors recipe weren't part of another puzzle.
It was fun to play overall.
Haha great challenge, it's very gratifying to beat each level. im currently at level 5 xD
Hey, showing the pressed keys on the bottom (like your C64 version) is a great visual feedback to inform what and when is pressed. just say it can be useful here too
tested on a pc with mouse, maybe on a touchscreen could be nicer and smoother play
do you plan to improve on something? (I've seen on string synths with adjustable string's hardness/bouncing, and multiplying strings with a couple of slightly detuned harmonics)
Do you have any samples or recordings to share? :D