Indeterminacy in music  

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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.
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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.

Aleatoricism is the creation of art by chance, exploiting the principle of randomness. The word derives from the Latin word alea, the rolling of dice. It should not be confused with improvisation.

Literature

An example of aleatory writing is the automatic writing of the French Surrealists involving dreams, et cetera. The French literary group Oulipo for example saw no merit in aleatory work and its members altogether eliminated chance and randomness from their writing, substituting potentiality as in Raymond Queneau's Cent Mille Milliards de Poèmes (Hundred Thousand Billion Poems).

Luke Rhinehart's novel The Dice Man tells the story of a psychiatrist named Luke Rhinehart who, feeling bored and unfulfilled in life, starts making decisions about what to do based on a roll of a die.

Charles Hartman discusses several methods of automatic generation of poetry in his book The Virtual Muse.

Music

aleatoric music

Pierre Boulez applied the term aleatoric music to his own pieces to distinguish them from the indeterminate music of John Cage, though both are often described as aleatory. While Boulez purposefully composed his pieces to allow the performer certain liberties with regard to the sequencing and repetition of parts, Cage often composed through the application of chance operations without allowing the performer liberties. Another prolific aleatory music composer is Karlheinz Stockhausen. Qubais Reed Ghazala, founder of the circuit-bending chance-music movement, is an important contemporary chance artist also pioneering aleatoric work in visual media (original techniques in suminagashi, dye migration, aperture shift photography).

Film

In film-making, there are several avant-garde examples; Andy Voda's "Chance Chants" (1979) was created completely using various chance operations (coin flip, choosing words out of a hat, a recorded "telephone game", the vagaries of tracing over drawings) in the decision-making for each creative choice. It was a three part film, the first part being a hand-made computer film, the second a visualization of Allison Knowles'[1] computer poem "House of Dust", and the third a visualization of evolution through a children's telephone game.

Fred Camper's SN (1984, first screening 2002) uses coin-flipping to determine which three of 18 possible reels to screen and what order they should go in (4896 permutations).

Barry Salt, now better known as a film scholar, is known to have made a film, Permutations, six reels long which takes the word aleatory quite literally by including a customized die for the projectionist to roll to determine the reel order (720 permutations).

Grant Patten utilizes an I Ching-inspired aleatory method to predict the date of his death in his short animation "The (Rough) Date of My Death" (2007).




Unless indicated otherwise, the text in this article is either based on Wikipedia article "Indeterminacy in music" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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