Karl Böhm
Other conductors with whom Hecht collaborated included Leonard Bernstein, Karl Böhm, Richard Bonynge, Renato Cellini, Christoph von Dohnányi, Sir Charles Groves, Walter Herbert, Georges Prêtre, Nicola Rescigno, Joseph Rosenstock, Sir Malcolm Sargent, Robert Shaw, William Steinberg, Silvio Varviso, and Marcello Viotti.