<http://schema.org/description>
"Have you ever listened to a song and wondered how the artist was able to make so many different sounds come together onto one recording? Since the 1950s, multitrack recording has made recording music easier -- and a lot more interesting."^^<http://www.w3.org/2001/XMLSchema#string>
<http://entertainment.howstuffworks.com/multitrack-recording3.htm>