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