Lexikon-Sonatealgorithmic music generator© 1992-2009 by Karlheinz Essl vs. 3.3 As a Christmas present to everyone, Karlheinz Essl's released his legendary realtime composition for computer-controlled piano in a new version that also runs with Mac OS X 10.6 ("Snow Leopard"). This piece exists only as software and can be downloaded for free.
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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!
NB: Quicktime must be installed on your machine.
Karlheinz Essl performing Lexikon-Sonate on a Bösendorfer CEUS computer piano
12 Dec 2008, Vienna (Bösendorfer-Saal)
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Updated: 22 Dec 2009