DJ Jimmy Jatt is a Nigerian deejay. His real name is Jimmy Adewale Amu and he was born in Lagos Island. He grew up listening to a lot of blues, soul, jazz and indigenous genres like juju, apala, fuji, highlife, funk, R&B, pop, disco and hip-hop as per the likes of people in his family. He happened to collect a lot of early rap albums from the 70's and 80's and developed an interest in hip-hop and rapping.

Jimmy Jatt started his entertainment career as a rapper, known as Master J. He made a lot of demos and after a fruitless search getting a record label to support him, he started deejaying, with the support of his brothers. They helped him establish a studio (JATT studio) and he eventually changed his stage name to DJ Jimmy Jatt in honour of his brothers, who were called Jimmy, Amu, Tunde, and Tayo. The studio was located on strategic Odo street which helped him reach an eager audience who took to his deejaying skills and hip-hop in general. Jimmy's popularity grew and he took part in some continental DJ competitions and emerged victorious. He started organizing annual jams at his studio which helped discover many rappers. He also helped get hip-hop airplay on local radio stations. He became one of Nigeria's premier deejays and cult figures, performing at various huge events.

He has helped nurture many deejays, turntable and spin doctors like DJ Waxy, DJ Syl-D, DJ Funky J, Mix Master Tee and DJ Hotega to name a few. He is also well respected in the Nigerian music scene for helping hip-hop gain popularity. He organized the Road Block Street Carnival which was an avenue for Nigerian rappers to groom their talent through lyrical battles, etc. Some of these musicians included 'Ruff, Rugged and Raw', Junior and Pretty, Daddy Fresh, Daddy Showkey, DJ Abdullah, El Cream, and Aladin (Formerly know as Chuck Da Bone). His events became the Mecca of Nigerian hip-hop as they were revered for bringing together the dons in the genre in Nigeria and being very popular with music fans. He also toured with various artistes and promotional tours for many companies.

His debut album, The Definition (Storm Records), is a mix tape featuring over 50 of Nigeria’s best artists. The first single "Stylee" featuring Tuface Idibia, Mode 9, and Elajoe was heavily successful, enjoying heavy airplay and the music video staying on the MTV Africa countdown for weeks while earning him a Channel O Africa music video award nomination. His foray into making songs/album follows the lead from most of Francophone Africa and Southern Africa and more Nigerian deejays are poised to follow suit.

He is the A&R director of Storm Records. He also does some consultancy work for night clubs and fun spots, advising them on audio systems and allied installations.

Some of the artistes featured in the Definition album are Tuface, Mode 9, Elajoe (Thorobreds), Ruggedman, Sound Sultan, Silly, 2ShotZ, Jafaar, Kel, W4, Terry The Rapman, O.D, Six-0, Honey, T-Show, K.B, ABounce.

Some of his songs are Thank you Mr. DJ, Jump off, Proceed, No duplicatin', No Contest, Everybody wan rap,