Theodor Bertram, Edith Clegg, Felix Asch, Edna May, A. Del Campo, Irene Abendroth, Annie Dirkens, Louise Kirkby Lunn, Marie Tempest, Gabriel Soulacroix, Fraulein Vroni Eidner, Paul Daraux, Giovanni Apostulo, Franz Pacal, Studio Pianist, Leopold Demuth, Les Troubadors Toulousains, W.A. Fransella, Kate Cove, Caro Roma, Ferruccio Giannini, Selma Kurz, Joseph O'Mara, Hermann Winkelmann, Ellen Beach Yaw, Desire Pauwels, Rene Fournets
