sentences:  In 2007, Kraus portrayed the composer "Antonio Salieri" in a concert production of Rimsky-Korsakov's "Mozart and Salieri".Kraus, after having been involved with the Northwestern University Gilbert and Sullivan Guild as director, co-founded Light Opera Works in 1980, one of only a few professional companies devoted to the operetta genre in the United States.He served as Artistic Director for 19 seasons directing 38 mainstage productions.