sentences:  Wührer made his Salzburg Festival debut in 1938.In 1939, as Paul Wittgenstein, who commissioned the work, had fled Austria, Wührer performed in the premiere of Schmidt's Quintet for piano, violin, clarinet, viola, and cello in A major, albeit in his own arrangement for two hands rather than, as originally written for piano, left hand alone.Thereafter, Wührer performed all the Schmidt left hand compositions in his own two-hand arrangements.