A while ago (last September perhaps?) I backed the Turrican Soundtrack Anthology kickstarter, and when they added a small number of extra musical boxes for the top tier, I was lucky enough to grab one. Even at the high price they commanded, I remember hitting reload constantly waiting for the batch to appear, getting mine, and then seeing only seconds later that they were all sold out again.
The soundtrack isn’t out for a number of weeks yet, but they did ship the musical boxes to the 20 people who bought them. Mine arrived today, so I balanced the camera precariously on some boxes, balanced the musical box precariously on a spraycan lid to get a better angle, and made a quick recording. Sorry the audio isn’t that great, actually the box sounds better closed when playing, as the lower tones echo in the case more.