Francesco Daddi, Studio cellist, Peter Dawson, Studio Pianist, Studio Conductor, Marie Rappold, Maria Delna, Blanche Arral, Pierre-Aurele Asselin, Lucrezia Bori, Antoinette Laute-Brun, Rosa Olitzka, Charles Hackett, Frieda Hempel, Karl Jorn, Walter Soomer, Gaston Dubois, Studio Orchestra, Jacques Urlus, Eleanor de Cisneros