- William Primrose, Joseph Kahn, Andre Benoist, Albert Spalding, Jascha Heifetz, Vernon de Tar, Marian Anderson, Franz Rupp, Harry Isaacs, Vladimir Sokoloff & Johana Harris
- Salvatore Accardo, Rocco Filippini, Margaret Batjer, Toby Hoffman & Franco Petracchi
- David Oistrakh, Sviatoslav Knushevitsky & Lev Oborin
- Hans Hotter & Michael Raucheisen