Mustafa Gündoğdu best known under his stage name MousseT., is a German DJ, record producer, film composer and judge on season 15 of Deutschland sucht den Superstar, the German version of Pop Idol.
He was born in Hagen, Germany in 1966 to Turkish parents. He started learning music at age of 13. He began his career in 1990 as keyboard player for a small band known as Fun Key B. At the same time, he set up his own recording studio and began DJing in the city of Hannover. Besides working on his own productions, usually with partner Errol Rennalls, MousseT. also wrote and produced tracks for other artists. In 1993, he founded, along with Rennalls, Peppermint Jam Records, a label specializing in uplifting house and melodic acid jazz music One of his most famous productions is Horny '98 featuring Hot 'n' Juicy.