Six degrees of Black Sabbath

it takes 16 steps to get from aphex twin to billy corgan.<p><a href="http://labs.echonest.com/SixDegrees/?start=aphex+twin&#38;end=billy+corgan" rel="nofollow">http://labs.echonest.com/SixDegrees/?start=aphex+twin&#38;en...</a>

I've been doing this for <i>years</i>: <a href="http://www.daz.com/" rel="nofollow">http://www.daz.com/</a>

I wonder where they are getting their information from. Connecting Gnarls Barkley to Muddy Waters reveals the song "もしも君まで失くしたら" by Neil Diamond as a connection, which plays Neil Diamond's cover of "The Chanukah Song".