A web application which magically turns your phone into a barrel organ

• Open the application using a phone (e.g. by clicking here)
• Select an audio file, preferably with music
• Put the phone on a pivotable surface, for example an office chair
• Start rotating the pivotable surface. The audio file will be played as long as the device is rotating. Just like on a true barrel organ, the playback speed depends on the turning speed!