Derrick Keyes (born September 19, 1969), known professionally as Nine, is an American rapper from the Bronx, New York City.

He is also known as 9MM or Nine Double M. Keyes got his break in early 1993 as a featured guest on Funkmaster Flex and the Ghetto Celebs' "Six Million Ways to Die".

"[1] His stage name refers to his date of birth (September 19, 1969), his shoe size, and his lucky number.

The ads used the song "Steady Bounce" by KRS-One from his album Strickly For Da Breakdancers & Emceez, which also used a sample from Nine's "Whutcha Want?".

According to an interview conducted with HalftimeOnline.net, Jeep never sought permission to use the sample, and Nine pursued legal action.