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Illiac Suite (later retitled String Quartet No. 4) is a 1957 composition for string quartet which is generally agreed to be the first score composed by an electronic computer. Lejaren Hiller, in collaboration with Leonard Issacson, programmed the ILLIAC I computer at the University of Illinois at Urbana-Champaign (where both composers were professors) to generate compositional material for his String Quartet No. 4.

The piece consists of four movements, corresponding to four experiments: the first is about the generation of cantus firmi, the second generates four-voice segments with various rules, the third deals with rhythm, dynamics and playing instructions, and the fourth with various models and probabilities for generative grammars or Markov chains.

References

1. Andrew Stiller, "Hiller, Lejaren (Arthur)", Grove Music Online (reviewed December 3, 2010; accessed December 14, 2014).
2. Denis L. Baggi, "The Role of Computer Technology in Music and Musicology", lim.dico.unimi.it (December 9, 1998).
3. Lejaren A. Hiller and Leonard M. Isaacson, Experimental Music: Composition With an Electronic Computer, second edition (New York: McGraw-Hill, 1959): 5–7. Reprinted, Westport, Conn.: Greenwood Press, 1979. ISBN 978-0-313-22158-3.

External links

• "Lejaren Hiller - Illiac Suite for String Quartet [1/4]". YouTube. December 4, 2011.
• "Lejaren Hiller - Illiac Suite for String Quartet [2/4]". YouTube. December 4, 2011.
• "Lejaren Hiller - Illiac Suite for String Quartet [3/4]". YouTube. December 4, 2011.
• "Lejaren Hiller - Illiac Suite for String Quartet [4/4]". YouTube. December 4, 2011.
• Sandred, Örjan; Laurson, Mikael; Kuuskankare, Mika. "Revisiting the Illiac Suite - a rule based approach to stochastic processes" (PDF).
• Swada, Lydia Tang (17 February 2014). "Illiac Suite for String Quartet".
• Di Nunzio, Alex (4 Dec, 2011). "Illiac Suite". {{cite web}}: Check date values in: |date= (help)

v t e Computer music
People	Marc Battier Richard Boulanger David Cope John Chowning Giuseppe di Giugno Charles Dodge Gottfried Michael Koenig Paul Lansky Max Mathews Gérard Pape Miller Puckette Roger Reynolds Jean-Claude Risset Curtis Roads Laurie Spiegel The Hub Trimpin Barry Vercoe Iannis Xenakis
Programs and instruments	ChucK Composers Desktop Project Csound FAUST HMSL Kyma Laptop orchestra Max/MSP MIDI controller Music Mouse Pure Data MUSIC-N Radiodrum Riffusion Sonic Pi SuperCollider TidalCycles UPIC
Places	Bell Labs CCRMA CEMAMu Computer Music Center at Columbia Experimental Music Studios ICEM ICMA IRCAM Center for New Music and Audio Technologies Princeton Sound Lab Oberlin TIMARA Labs IEM
Techniques	Algorithmic composition Artificial intelligence Sound synthesis Digital synthesis
Compositions	Illiac Suite Mortuos Plango, Vivos Voco

• Compositions for string quartet
• Computer music compositions
• Suites