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