One of Germany's most popular singers, he published four studio solo albums so far (the first, "Seeing Is Believing" under the pseudonym "Kobra"), two as one of the singers of his band Söhne Mannheims, continues to be an engaged member of anti-discrimination group "Brothers Keepers", sings in countless feature appearances (e.g. with
RZA,
Sabrina Setlur, or Somersault), and has appeared in a growing number of video clips accompanying his single releases.