- Studio Conductor, Grete Stuckgold, Herman Weigert, Oskar Fried, Heinrich Rehkemper, Studio Pianist, Studio Orchestra, Selmar Meyrowitz, London Philharmonic Orchestra, Eduard van Beinum, Charles Kullman, Malcolm Sargent, Jascha Horenstein, Emmi Leisner, Eugenia Zareska, Sara Charles-Cahier, Staatskapelle Berlin, Heinrich Schlusnus, Karin Branzell
