Clarence "Citizen Cope" Greenwood is a blend of everything from blues and hip-hop to country and grunge. He has recorded and performed with Sheryl Crow. Eric Clapton once brought Citizen Cope on stage at a music festival to perform with him. His songs have been heard in "Scrubs," "One Tree Hill," "Entourage," "So You Think You Can Dance" and on the "Smallville" soundtrack.