<http://schema.org/description>
"Sharing music is becoming a favorite social feature for many people with Facebook introducing the News Ticker and deep integration with apps like Spotify and Rdio using the Open Graph ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2012/05/04/google-play-gets-google-functionality-with-shared-with-me-for-music/>