Grandmaster Caz

Curtis Brown (born April 18, 1960), better known by the stage names Grandmaster Caz and Casanova Fly, is an American rapper, songwriter, and DJ. He was a member of the hip-hop group The Cold Crush Brothers from 1979 to the mid-1980s. He is best known as the (uncredited) main writer of Big Bank Hank's raps on the seminal 1979 hip-hop single by The Sugarhill Gang, "Rapper's Delight".

He worked with Debra Harris as a celebrity tour guide for Hush Hip Hop Tours, a hip-hop cultural sightseeing tour company in New York City, and is a board member of The Kennedy Center's Hip-Hop Council, Hip-Hop Ambassador and board member for Windows of HipHop and CEO of GMC Entertainment Inc.