<http://schema.org/description>
"Google today released a new spiffy page called Music Timeline. The visualization tool uses aggregated data from Google Play Music to show how artists and genres have gained and dropped ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2014/01/16/google-releases-music-timeline-visualization-music-genres-decades/>