(b Basle, 1906; d Basle, 1999).
Swiss cond. Founded Basle Chamber Orch. 1926, Schola Cantorum Basiliensis 1933. Cond. Zurich Collegium Musicum (chamber orch.) from 1941. Dir., Basle Acad. of Mus. 1954–69. Cond. at Glyndebourne 1954–63 (début in The Rake's Progress). NY début 1955. Among works commissioned for his Basle and Zurich chamber orchs. are Bartók's Divertimento and Music for Strings, Percussion and Celesta, Strauss's Metamorphosen, and works by many contemp. composers.