- William Primrose, Joseph Kahn, Andre Benoist, Albert Spalding, Jascha Heifetz, Vernon de Tar, Marian Anderson, Franz Rupp, Harry Isaacs, Vladimir Sokoloff & Johana Harris
- Andrei Mytnik & Leonid Kogan
- Dennis Nesbitt, Ivor Keyes & Ruggiero Ricci
- Isaac Stern & Alexander Zakin
- Mischa Elman & Joseph Sieger