Wiener Singverein, Cornell MacNeil, Eugenia Ratti, Herbert von Karajan, Fernando Corena, Renata Tebaldi, Carlo Bergonzi, Arnold van Mill, Vienna Philharmonic, Giulietta Simionato & Oliviero de Fabritiis
Eugene Ormandy, George London, Martina Arroyo, Tito del Bianco, Westminster Choir, Lucine Amara, Abraham Kaplan, Camerata Singers, Justino Diaz, The Philadelphia Orchestra, Richard Tucker, Beverly Wolff, Thomas Schippers, Maureen Forrester & New York Philharmonic