James Brown also became known as "the hardest working man in show business."

VOA: special.2010.05.16

He earned the nickname "The Hardest Working Man in Show Business" and often tried to prove it to his fans, said Jay Ross, his lawyer of 15 years.

NPR: Harlem Says Its Farewell to James Brown

Gregg Gillis, the obsessive brain and tireless body behind the electronic mashup project called Girl Talk, is, perhaps, the hardest-working man in show business.

FORBES: Girl Talk's Gregg Gillis On Copyright, Curation and Making Mashups Rhyme