jquery.fancytree/demo/ajax-tree-instruments.json

Fancytree is a JavaScript tree view plugin for jQuery with support for persistence, keyboard, checkboxes, drag'n'drop, and lazy loading.

http://jameskennedymonash.files.wordpress.com/2012/05/musical-instruments.jpg
http://yamltojson.com/

"Musical Instruments":
- "Aerophones":
	- "Free aerophones":
		- "aa"
		- "bb"
	- "Pipe aerophones"