Steffen Zimmer a.k.a. Karel Komnatoff has worked with/for: The Far East Band, Gentleman, Di Grine Kuzine, Ofrin, Kat Frankie, Axl Makana, Aztekanayas, The Fuzztones, Blascore, Engine 54, Culcha Candela, Nosliw, Eased from Seeed, Ganjaman, Ohrbooten, Fettes Brot, Tamika Mamadee, Avocadoclub, Blochin 81, The Flintstones Big Band, The Thursday's Rhythm And Beat ORGANisation, Thomas Putensen Beat Ensemble, Bolschoi Bandits , Südthüringische Staatstheater Meiningen, Maxim Gorki Theater, Neuköllner Oper, Theater Erfurt, Deutsches Nationaltheater Weimar, Michele Baresi, Messer Banzani, Mutabor, Jimmy Cliff, Tolga, Ronnie Trettmann, Pionear , Space Kelly...
