Present a clickable list of genres when playing a song

[Shemahmforash]

Find out if echonest has this information available in their api. If don't, try last.fm.

[Shemahmforash]

Echonest, as far as I know, doesn't have this, although one can find it at last.fm api with the tags: http://www.lastfm.pt/api/show/artist.getTags

Update: One can also find it at echonest - http://developer.echonest.com/api/v4/artist/profile?api_key=2FOIUUMCRLFMAWJXT&id=ARH6W4X1187B99274F&bucket=terms
or
http://developer.echonest.com/api/v4/artist/profile?api_key=2FOIUUMCRLFMAWJXT&name=Madredeus&bucket=terms

[Shemahmforash]

One can use this tag cloud generator: https://github.com/addywaddy/jquery.tagcloud.js/