Fooled around audio material "freely" available on the Internet.
Demo built with Web Audio API, and paulstretch.js
Sébastien Piquemal <http://funktion.fm>
NB: This works only in Chrome for now
In Firefox, a bug with MediaElementAudioSourceNode prevents this demo from working. This is fixed in Firefox 37.0+ , so please upgrade Firefox!
Sorry my friend, you will have to use another browser. Try Chrome!