hitjam.io
A real music box comb, tiny bright metal tines, high and sweet.
No MIDI keyboard? Play with your computer keys: bottom rows are the lower octave, top rows the higher one. Hold Shift to sustain. ← → octave, ↑ ↓ semitone.
Music box online
The notes are recordings of a real music box comb, each tine plucked on its own, from the D an octave above middle C upward. A real comb is tuned for one song and skips notes; here the nearest tine is retuned so every key plays.
Plug in a controller and play your own tune high on the keyboard, where a music box lives. Slow melodies and lullabies suit it best: let each note chime and fade.
No download, no account and no sign-up. Play it, record it, and keep the WAV, which is made on your own device.