A variable loop turning around on seven piano keys. Written in 1973 and revised in 1993. About 12 minutes, 7€.

Four movements with a mathematical melody in one, two, three, and finally four voices. 6 minutes, 7€.

A collection of movements extracted from Organ and Silence, dedicated to John McAlpine. Premiered in Düsseldorf in September, 29, 2002. 25 minutes, 15€.

CD recording available: Counting Keys 

An organ solo in four sections, each seven times longer than the previous one. 12 minutes, 5€.

A collection of 28 organ pieces to be played separately or as a long recital. A minimal meditative kind of music with much more silence than sound. 120 minutes, 20€.

CD recording available: Organ and Silence