Markus Ratka is the founder and director of the Jam Music Lab. Previously, during the 90s, he worked as a freelance musician, composer and director in several projects: Joe Zawinul, Sylvester Levay, Harry Kupfer, Jérôme Savary, Werner Herzog, Hansi Lang, Paul Capsis, Roman Gottwald, Thomas Gansch, Mario Gonzi, Georg Breinschmid, Bumi Fian, Herwig Gradischnig, Erika Pluhar, Boris Eder Theater an der Wien and various television channels such as ORD, ARD and RTL. In 2002 he founded and directed the Chameleon Changes and Zur Eisernen Zeit ensembles and in 2010 he went on to work as a musical head of the company 4tune Media Productions in Vienna. A year later, he founded, together with Andreas Bartosch and Johannes Valentin, the Jam Music Lab, the first private university of jazz and popular music in Vienna. The organization offers different programs of academic and professional training in the music sector.