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GZA of The Wu-Tang Clan performs at the Glastonbury Festival at Worthy Farm, Pilton on June 24, 2011 in Glastonbury, England. The festival, which started in 1970 when several hundred hippies paid 1 GBP to watch Marc Bolan, has grown into Europe's largest music festival attracting more than 175,000 people over five days.
A little more than 20 years ago the music world experienced a revolution. "Enter the Wu-Tang (36 Chambers)" was the debut of the Staten Island based hip hop group Wu-Tang Clan.
One of the founding members was Gary Grice, better known as GZA or The Genius. But now he's turning from rapping about New York, crime and martial arts films to rapping about black holes and the universe.
GZA joins the show to talk about his career and what he's looking forward to in the future.