Unique concept and take on theme. I also encountered bug where it didn't detect my voice on restart, but that's only when I manually restarted the level. Restarting after failed was normal.
I noticed that if I fell from top platform even slighter, I lost. I don't know if that was intentional or not, but good approach is to only consider it over if player goes outside of screen, because even if I fell from top platform, I can still manage to land on bottom one.
Also game was not over when I ran out of screen on right side, and that is when I manually restarted and voice didn't register.
Apart form that nice game, I had idea while playing this, what if we can set some song in game or system, and when the pitch rises it jumps, that would make it even cooler, kind of turning it into a rhythm platformer.