What is "d-irie"

Denis Quist better known as D-Irie (born 1981) is a German rapper, who became known in the autumn 2006, with his single "Was jetzt los!?!" ("what up now!?!"). He is signed hip-hop label Shok-Muzik.

He is known for his diss tracks against various German rappers, such as Sido, Azad, Massiv and Kool Savas.