Alfons Kontarsky, Aloys Kontarsky, Christoph Caskel, Heinz Koenig – Bart k Sonata for 2 Pianos and Percussion - Allegro non troppo
6:07
Alfons Kontarsky, Aloys Kontarsky, Christoph Caskel, Heinz Koenig – Bart k Sonata for 2 Pianos and Percussion - Lento ma non troppo
6:50