Karlheinz Essl

Portrait KHE

Lexikon-Sonate online

Infinite Realtime Composition for Computer-Controlled Piano
Internet version (© 1997 ff.)

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Welcome to the online version of Karlheinz Essl's legendary Lexikon-Sonate - a computer program which generates piano music on the fly, in a never repeating manner. The original computer program (started in 1992) is written in Max/MSP and runs on Apple Macintosh computers. In order to enjoy the fruits of Lexikon-Sonate also online, I created a version for the Internet which works on all platforms (PC, Mac). Just click on the yellow "play" button below - then lean back and enjoy!

Play Lexikon-Sonate...

NB: Quicktime must be installed on your machine.


Karlheinz Essl performing Lexikon-Sonate on a Steinway, equipped with a transducer
29 Nov 2014, The Hague (Royal Conservatory of Music)

Karlheinz Essl performing Lexikon-Sonate on his laptop
23 Sep 2011, Montreal (Concordia University)

Karlheinz Essl performing Lexikon-Sonate on a Bösendorfer CEUS computer piano
12 Dec 2008, Vienna (Bösendorfer-Saal)

Lexikon-Sonate Home Works Sounds Bibliography Concerts

Updated: 3 Dec 2014