With his diverse musical activities and venues, Frank Maus (1937–2022) was an institution in the musical life of the cosmopolitan city of Berlin. Born in Haan near Solingen, he worked as a solo repetiteur at the Vienna State Opera, after studying in Cologne, and from 1966 at the Deutsche Oper Berlin before being appointed to a professorship for repertoire in the singing and music theatre department at the former Berlin University of the Arts in 1981. Thanks to his extensive experience with all e...