It's just me playing the first few measures of Hedwig's Theme on the violin. I've added my version of mres's OceanMusicBox for the accompaniment.
You can move the starfish and urchins around to make your own tune - change the instrument and speed. But press the tiny left-most red circle before clicking green flag or they will all go back to the default position. Please enjoy and remix if you wish. Please comment. Suggestions are very welcome.
