Trettmann (born October 9, 1973 in Karl-Marx-Stadt, now Chemnitz) is a hip-hop,
R&B and dancehall singer from Germany. Born Stefan Richter, his musical roots
lie in 1980s hip-hop and reggae. The singer started out as a comedy artist,
satirizing the German reggae and dancehall scene with a Saxon accent. This is
also the background for his debut single "Der Sommer Ist Für Alle Da!", which
even reaches number 53 in the German charts in 2006. His mixtape Kaffee-Mix was
released in the same year. He releases both productions under the artist name
Ronny "RT" Trettmann. 2008 sees the re...