Jack Orsen is a Berlin-based battle rapper and a member of the influential rap group MOR, which is widely regarded as a pioneer of German-language battle rap. He became interested in hip-hop after meeting rapper Curse and later joined the crew Masters of Rap alongside future prominent artists such as Kool Savas, Fumanschu, and Justus Jonas. He developed his career within the Royalbunker café, and frequently collaborated with fellow MOR members. He also appeared on releases by artists including Automatikk, Boba Fettt, Eko Fresh, King Orgasmus One, and Prinz Porno. In 2004, he released his debut solo album Note 1+ and later that year collaborated with Taktloss on Straight Out of Prison (You Spaz). After a long recording hiatus, he returned in 2021 with the album Raproboter, which became his first solo chart success, reaching number 36 on the German album chart.
