Boskovsky Quartet [Willi Boskovsky (violin I) Philipp Matheis (violin II) Gunther Breitenbach (viola) Nikolaus Hubner (cello)]
Clifford Curzon Wiener Philharmonic Quartet (Willi Boskovsky, Otto Strasser - Violins Rudolf Streng - Viola Robert Scheiwein - Cello)