Gnarls Barkley is a Grammy award winning American musical group collaboration between multi-instrumentalist and producer Danger Mouse (Brian Burton) from New York, and rapper/vocalist Cee-Lo Green (Thomas Callaway), from Atlanta. Their first album, St. Elsewhere, was released in 2006; it and their first hit, "Crazy", were major commercial successes, and were noted for their large sales by download. The duo released their second album, The Odd Couple, in March 2008.