Ernest Ansermet
He performed under every major conductor of the 20th century, including Serge Koussevitsky, Sir Thomas Beecham, Leonard Bernstein, Herbert Von Karajan, Zubin Mehta, Sir George Solti, Ernest Ansermet, Pablo Casals, Aaron Copland, Otto Klemperer, Michael Steinberg and Igor Stravinsky, with whom he recorded several works.