<http://schema.org/about>
"While back we showed you an iPhone app that lets you customize nature sounds to chill out to. You could choose a basic theme, like the ocean, and boost up the crashing waves or tone down the seagull calls to get"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/be-your-own-nature-sounds-dj-with-free-audio-mixer.html>