Treatise is a musical composition by British composer Cornelius Cardew (1936–81). Treatise is a graphic musical score comprising 193 pages of lines, symbols, and various geometric or abstract shapes that largely eschew conventional musical notation. Implicit in the title is a reference to the philosophy of Ludwig Wittgenstein, which was of particular inspiration to Cardew in composing the work. The score neither contains nor is accompanied by any explicit instruction to the performers in how to perform the work. Cardew worked on the composition from 1963 to 1967.
Although the score allows for absolute interpretive freedom (no one interpretation will sound like another), the work is not normally played spontaneously, as Cardew had previously suggested that performers devise in advance their own rules and methods for interpreting and performing the work. There are, however, almost infinite possibilities for the interpretation of Treatise that fall within the implications of the piece and general principles of experimental music performance in the late 1960s, including presentation as visual art and map-reading (Anderson 2006).
Subsequently Cardew embraced Maoism and wholeheartedly repudiated this and other works of his avant-garde period. A savage indictment of Treatise may be seen in a speech delivered by Cardew at the ‘International Symposium on the Problematic of Today’s Musical Notation’ held in Rome in October 1972, as transcribed in his highly polemical book Stockhausen Serves Imperialism (1974), available in PDF format at UBUweb.
- Virginia Anderson, "Well, It's a Vertebrate" Performer Choice in Cardew's Treatise', Journal of Musicological Research, 25/3–4 (2006): pp. 291–317.
- Cornelius Cardew, "Wiggly Lines and Wobbly Music," Breaking the Sound Barrier: a Critical Anthology of the New Music, ed. Gregory Battcock (New York: 1981)
- Brian Dennis, "Cardew's Treatise: Mainly the Visual Aspects," Tempo 177 (1991): pp. 10-16
- Sonic Youth play a 3:29 minute excerpt of page 183 of Treatise on their CD SYR4: Goodbye 20th Century (1999)
- An online animated analysis of Treatise at the Block Museum Website
- Online recordings of Treatise by the Seattle Improv Meeting
- Online recordings of "Treatise" by Matt Smiley
- A draft version of Virginia Anderson, '"Well, It's a Vertebrate" Performer Choice in Cardew's Treatise'.
- Animated electronic realization of "Treatise" by Shawn Feeney