sentences:  When he returned from Berklee, he performed both as solo violinist and musical director in various theatres and band projects.His performances included Cirque du Soleil, "Deutsche Schauspielhaus", Hamburg, "Maxim Gorki Theater", Berlin, "Deutsche Theater", Berlin, "Deutsche Schauspielhaus", Hanover and Hans-Peter Wodarz’s Dinnershow "Pomp Duck and Circumstance".Gregor also played as a solo violinist with Calexico and the Electric Light Band (with Phil Bates, singer and songwriter of ELO Part II ).