Sonata for 2 Pianos and Percussion BB 115 Sz. 110 (1937)
Wilfried Kassebaum (Piano), Friedrich Wilhelm Schnurr (Piano), Waldemar Döling (Percussion), Martin Christoph Redel (Percussion)
1981, Detmold, Neue Aula der Nordwestdeutschen Musikakademie Detmold
- 13:04I. Assai lento – Allegro troppo
- 06:14II. Lento, ma non troppo
- 06:48III. Allegro non troppo