Kenny Loggins Spandau Ballet Living in a Box Aretha Franklin Glenn Frey Haircut One Hundred The Go‐Go’s Martha and the Muffins The Lotus Eaters Kirsty MacColl Don Henley The B‐52s Colonel Abrams Landscape The Valentine Brothers Chaka Khan Prince Grandmaster Flash Joseph Robert Saddler (born January 1, 1958), popularly known by his stage name Grandmaster Flash, is an American DJ and producer. He created a DJ technique called the Quick Mix Theory.[2][3] This technique serviced the break-dancer and the rapper by elongating the drum breaks through the use of duplicate copies of vinyl. This technique gave birth to cutting, scratching. It also gave rappers better music with a seamless elongated bed of beats to speak on.[4] He also invented the slipmat.[5]