Beretta, Mario 1942- Switzerland, Grabs
pianist, conductor, studied pianist with Walter Frey, Hubert Harry and Jan Ekier at the Conservatories of Zurich, Lucerne and Warsaw, followed by further studies in pedagogy, composition and conducting, 1975-1985 musical collaborator at the Zurich Schauspielhaus, since 1986 freelance composer, conductor and author of stage and film music