Original tekst: J. Cage. Robyn Schulkowsky. By Achim Christian Bornhoft & Others. Sonata for 2 Voices. Voice sheet music. J. Cage.
Oversættelse: Sonate for 2 Voices. Voice noder. Sonate for 2 Voices af Kornelia Brandkamp. Reinhold Friedrich. Jens Peter Maintz. Truike Van Der Poel.