Generative music is a term popularized by Brian Eno to describe music that is ever-different and changing, and that is created by a system.
In 1995 whilst working with SSEYO's Koan software (built by Tim Cole and Pete Cole who later evolved it to Noatikl then Wotja), Brian Eno used the term "generative music" to describe any music that is ever-different and changing, created by a system. The term has since gone on to be used to refer to a wide range of music, from entirely random music mixes created by multiple simultaneous CD playback, through to live rule-based computer composition.
Koan was SSEYO's first real-time music generation system, developed for the Windows platform. Work on Koan was started in 1990, and the software was first released to the public in 1994. In 1995 Brian Eno started working with SSEYO's Koan Pro software, work which led to the 1996 publication of his title 'Generative Music 1 with SSEYO Koan Software'.
Eno's early relationship with SSEYO Koan and Intermorphic co-founder Tim Cole was captured and published in his 1995 diary A Year with Swollen Appendices.
There are four primary perspectives on generative music (Wooller, R. et al., 2005) (reproduced with permission):
Music composed from analytic theories that are so explicit as to be able to generate structurally coherent material (Loy and Abbott 1985; Cope 1991). This perspective has its roots in the generative grammars of language (Chomsky 1956) and music (Lerdahl and Jackendoff 1983), which generate material with a recursive tree structure.
Music generated by a system component that has no discernible musical inputs. That is, "not transformational" (Rowe 1991; Lippe 1997:34; Winkler 1998). The Wotja software by Intermorphic, and the Koan software by SSEYO used by Brian Eno to create Generative Music 1, are both examples of this approach.
Music generated by processes that are designed and/or initiated by the composer. Steve Reich's It's Gonna Rain and Terry Riley's In C are examples of this (Eno 1996).
Non-deterministic music (Biles 2002), or music that cannot be repeated, for example, ordinary wind chimes (Dorin 2001). This perspective comes from the broader generative art movement. This revolves around the idea that music, or sounds may be "generated" by a musician "farming" parameters within an ecology, such that the ecology will perpetually produce different variation based on the parameters and algorithms used. An example of this technique is Joseph Nechvatal's Viral symphOny: a collaborative electronic noise music symphony [1] created between the years 2006 and 2008 using custom artificial life software based on a viral model. [2]
Noise music is a genre of music that is characterised by the expressive use of noise. This type of music tends to challenge the distinction that is made in conventional musical practices between musical and non-musical sound. Noise music includes a wide range of musical styles and sound-based creative practices that feature noise as a primary aspect.
Generative art is post-conceptual art that has been created with the use of an autonomous system. An autonomous system in this context is generally one that is non-human and can independently determine features of an artwork that would otherwise require decisions made directly by the artist. In some cases the human creator may claim that the generative system represents their own artistic idea, and in others that the system takes on the role of the creator.
Generative grammar is a research tradition in linguistics that aims to explain the cognitive basis of language by formulating and testing explicit models of humans' subconscious grammatical knowledge. Generative linguists, or generativists, tend to share certain working assumptions such as the competence–performance distinction and the notion that some domain-specific aspects of grammar are partly innate in humans. These assumptions are rejected in non-generative approaches such as usage-based models of language. Generative linguistics includes work in core areas such as syntax, semantics, phonology, psycholinguistics, and language acquisition, with additional extensions to topics including biolinguistics and music cognition.
Algorithmic composition is the technique of using algorithms to create music.
Alfred Whitford (Fred) Lerdahl is an American music theorist and composer. Best known for his work on musical grammar, cognition, rhythmic theory and pitch space, he and the linguist Ray Jackendoff developed the Chomsky-inspired generative theory of tonal music.
Karlheinz Essl is an Austrian composer, performer, sound artist, improviser, and composition teacher.
"Cognitive Constraints on Compositional Systems" is an essay by Fred Lerdahl that cites Pierre Boulez's Le Marteau sans maître (1955) as an example of "a huge gap between compositional system and cognized result," though he "could have illustrated just as well with works by Milton Babbitt, Elliott Carter, Luigi Nono, Karlheinz Stockhausen, or Iannis Xenakis". To explain this gap, and in hopes of bridging it, Lerdahl proposes the concept of a musical grammar, "a limited set of rules that can generate indefinitely large sets of musical events and/or their structural descriptions". He divides this further into compositional grammar and listening grammar, the latter being one "more or less unconsciously employed by auditors, that generates mental representations of the music". He divides the former into natural and artificial compositional grammars. While the two have historically been fruitfully mixed, a natural grammar arises spontaneously in a culture while an artificial one is a conscious invention of an individual or group in a culture; the gap can arise only between listening grammar and artificial grammars. To begin to understand the listening grammar, Lerdahl and Ray Jackendoff created a theory of musical cognition, A Generative Theory of Tonal Music. That theory is outlined in the essay.
Algorithmic art or algorithm art is art, mostly visual art, in which the design is generated by an algorithm. Algorithmic artists are sometimes called algorists.
Nodal is a generative software application for composing music. The software was produced at the Centre for Electronic Media Art (CEMA), Monash University, Australia. It uses a novel method for the notation and playing of MIDI based music. This method is based around the concept of a user-defined graph. The graph consists of nodes and edges. The composer interactively defines the graph, which is then traversed by any number of virtual players that play the musical events as they encounter them on the graph. The time taken by a player to travel from one node to another is based on the length of the edges that connect the nodes.
Joseph Nechvatal is an American post-conceptual digital artist and art theoretician who creates computer-assisted paintings and computer animations, often using custom computer viruses.
Tao Group was a software company with headquarters in Reading, Berkshire, UK. It developed the Intent software platform, which enabled content portability by delivering services in a platform-independent format called Virtual Processor (VP). The business's IP portfolio was sold in May 2007 to Cross Atlantic Capital Partners.
A Year with Swollen Appendices is a book by Brian Eno. The paperback book was published by Faber and Faber in 1996 and is divided into two sections. The first part is a diary covering the year 1995, the second part, the 'swollen appendices' of the title is a collection of essays, short stories and correspondence. It was re-released with a new introduction by the author in 2021.
77 Million Paintings is a digital art software/DVD combination by British musician Brian Eno, released in 2006.
Koan is a generative music engine created by SSEYO, a company founded by Pete Cole and Tim Cole. The Koan technology is now owned by Intermorphic Limited, co-founded by the Cole brothers in 2007.
Peter Chilvers is a Cambridgeshire-based British musician and software designer.
Brian Peter George Eno, also mononymously known as Eno, is an English musician, songwriter, record producer and visual artist. He is best known for his pioneering contributions to ambient music and electronica, and for producing, recording, and writing works in rock and pop music. A self-described "non-musician", Eno has helped introduce unconventional concepts and approaches to contemporary music. He has been described as one of popular music's most influential and innovative figures. In 2019, he was inducted into the Rock and Roll Hall of Fame as a member of Roxy Music.
Music and artificial intelligence is the development of music software programs which use AI to generate music. As with applications in other fields, AI in music also simulates mental tasks. A prominent feature is the capability of an AI algorithm to learn based on past data, such as in computer accompaniment technology, wherein the AI is capable of listening to a human performer and performing accompaniment. Artificial intelligence also drives interactive composition technology, wherein a computer composes music in response to a live performance. There are other AI applications in music that cover not only music composition, production, and performance but also how music is marketed and consumed. Several music player programs have also been developed to use voice recognition and natural language processing technology for music voice control. Current research includes the application of AI in music composition, performance, theory and digital sound processing.
viral symphOny is a collaborative electronic noise music symphony created by the postconceptual artist Joseph Nechvatal. It was created between the years 2006 and 2008 using custom artificial life C++ software based on the viral phenomenon model. It is 1 hour and 40 minutes in length. The first movement of viral symphOny - and raw viral field material - was released in 2006 as a CD by The Institute for Electronic Arts in Alfred, New York. A low resolution extract from the pOstmOrtem section of viral symphOny was published in NME magazine.
The generative theory of tonal music (GTTM) is a system of music analysis developed by music theorist Fred Lerdahl and linguist Ray Jackendoff. First presented in their 1983 book of the same title, it constitutes a "formal description of the musical intuitions of a listener who is experienced in a musical idiom" with the aim of illuminating the unique human capacity for musical understanding.
Timothy Didymus is a British artist and musician based in Brighton. He is considered a pioneer in the field of generative music. Didymus has collaborated with artists such as Brian Eno, Cornelia Sollfrank, Emilia Telese and presented at institutions and festivals such as ZKM, Ars Electronica, International Symposium on Electronic Art (ISEA), Werkleitz Biennale of Multimedia Arts, Liverpool Biennial, De La Warr Pavilion, Fort Process.