Max Eugen Keller (born 19 March 1947, Aarau) is a Swiss composer, jazz pianist and improvising musician.
Keller studied (fellowship by the Heinrich Strobel Foundation in Freiburg, Germany) musicology, history and composition with Hans Ulrich Lehmann and Helmut Lachenmann[1] at the City of Basel Music Academy and with Nicolaus A. Huber and Thomas Kessler.
He worked together with Dani Schaffner, Christoph Gallio, Peter A. Schmid, Mathias Rissi [de], Kurt Grämiger, Daniel Mouthon, Thomas Borgmann, Hans Koch, Urs Leimgruber, Günter Müller, Hans Hassler, Charlotte Hug, Matthias Ziegler, Christian Wolfarth, Günter Heinz and Barry Guy.
He produce a chamber opera (commission of the Komische Oper Berlin) and several songs.
His compositions have been performed in Europe, Australia, South Africa, North and South America, Russia, Korea, China, Mongolia and Azerbaijan (including the World Music Days in Zurich (1991) and Mexico (1993)).