Jeff Bass

Jeffrey "Jeff" Bass (born May 16, 1961) is an American music producer from Detroit, Michigan, best known as one half of the Bass Brothers and for his work with Eminem. Bass was signed to a contract by Quincy Jones in 1980 at 19 years old. 
He co-produced the song "Lose Yourself", alongside Eminem which won the Oscar for Best Original Song at the 75th Academy Awards. The song was featured in the movie 8 Mile, which starred Eminem in his Movie debut.