Hey smartmagpie. I'm playing the WebGL version of your game.
So far so good, I like the concept. Want to play it a little bit more but was surprised about one thing:
Volume keys from my keyboard changes the sample being played in the game :D!
Not sure if its a bug or was intentional, but I was amusingly surprised by this bug/feature XD.
So much that I might use some similar in the future.