1 Sonata for 2 Pianos and Percussion, BB 115: I. Assai lento - Allegro molto John Simms, Thomas Davis, James Avery, Steven Schick, and Bela Bartok
3 Sonata for 2 Pianos and Percussion, BB 115: III. Allegro non troppo John Simms, Thomas Davis, James Avery, Steven Schick, and Bela Bartok
4 Sonata for 2 Pianos and Percussion, BB 115: II. Lento, ma non troppo John Simms, Steven Schick, James Avery, Thomas Davis, and Bela Bartok