Más de Clara Butt
- Jussi Björling, Maggie Teyte, Enrico Caruso, Rosa Ponselle, Nellie Melba, Kathleen Ferrier, Jennie Tourel, Richard Tauber, Ferruccio Tagliavini, Pia Tassinari, Beniamino Gigli, Kirsten Flagstad, Licia Albanese, Giuseppe di Stefano, Elisabeth Schumann, Set Svanholm, Feodor Chaliapin, Lotte Lehmann, Erna Berger, Frida Leider, Lauritz Melchior, Ezio Pinza & Renata Tebaldi
- Rosa Ponselle, Romano Romani, Mischa Schmidt, Igor Chichagov & Ruby Mercer
- Elisabeth Schwarzkopf