Raise two hands to the webcam. A line connects your two index fingertips, and its
length sets the pitch. Coloured notes fall toward the line; match your finger spread to
each note's width as it crosses — a meow plays at that pitch on every note. Pick a
level from the buttons up top: Twinkle, Butterfly, Madame Butterfly, or endless Random.
Edit the CONFIG block at the top of this file to write your own melodies, or drop a
real recording in as meow.wav.
This will ask for camera access. Everything runs locally in your browser.