The fourth Tier 3 Adjacent form. The European-school improvising tradition that explicitly broke with jazz idiom. Three founding moments 1963–1966 in London and Sheffield. Continental parallels from 1966–68. The heaviest memorial register in the archive.
F·13 is the fourth Tier 3 Adjacent form filed in this archive, and the form's non-idiomatic improvising tradition in Derek Bailey's term. The form sits structurally outside the industrial tradition proper while bridging into it through the London experimental milieu of the late 1960s and 1970s; the bridge into F·11 industrial proper runs through the AMM/SME/Bailey citation chain in early Throbbing Gristle, Cabaret Voltaire and Coil materials. The form is filed at Tier 3 because its figures come from European jazz and classical-experimental backgrounds rather than from the post-1976 industrial tradition; the method is, however, methodologically central to the avant-garde context the industrial tradition emerged from.
An editorial distinction the Bureau insists on: free improvisation (the European tradition from 1965 onward) is not interchangeable with free jazz (the American tradition from Coleman 1959, Coltrane post-1965, Ayler). The two are related and cross-pollinated, but methodologically distinct. Free jazz remains within the jazz idiom: blues form, harmonic progression, the soloist-and-rhythm-section palette, jazz instrumentation and phraseology. Free improvisation, as Bailey defined it in Improvisation: Its Nature and Practice in Music (Moorland 1980), explicitly broke with the jazz idiom and refused the conventional virtuosity-and-soloist mode; AMM, SME and the Joseph Holbrooke trio all positioned themselves outside jazz from their founding moments. Some figures (Brötzmann most prominently and the Bennink/Mengelberg ICP) sit ambiguously across both traditions; the Bureau acknowledges the ambiguity. The American AACM tradition (Anthony Braxton, Roscoe Mitchell, Joseph Jarman, the Art Ensemble of Chicago) parallels the European tradition without being downstream from it; AACM/free-jazz sits outside this archive's industrial scope and is not filed.
The form's founding moment is the formation of AMM in London in 1965 by Eddie Prévost (b. 22 June 1942), Keith Rowe (b. 16 March 1940), Lou Gare (1939–2017) and Lawrence Sheaff, with the composer Cornelius Cardew (1936–1981) joining shortly thereafter. AMM's method established the form's central editorial position: real-time composition without pre-set structure, group-listening as primary methodology, prepared instruments (Rowe's tabletop guitar, Cardew's prepared piano), the refusal of solo-and-accompaniment hierarchy. AMMMusic 1966 (recorded 8 June 1966, released 1967 on Elektra) the first recording. AMM continued through multiple lineup configurations: John Tilbury joined 1980 and remains; Cardew was killed in a hit-and-run in Leyton, East London on 13 December 1981, age 45 (the driver was never identified). Cardew's earlier graphic score Treatise (1963–67, Edition Peters) is the most-cited graphic-notation work in 20th-century European music, though Cardew himself disavowed it after his Maoist turn 1971–72.
The Spontaneous Music Ensemble was formed in London in 1966 by John Stevens (1940–1994) and Trevor Watts (b. 26 February 1939) at the Little Theatre Club, where they ran a Monday-night residency that became the form's London anchor for several years. SME's method was the "insect music" miniaturist vein: quiet textural events, attention to small gestures, the rejection of the loud-and-virtuosic idiom cultivated alongside by the Brötzmann-led continental school. Karyobin (recorded 18 February 1968 at Olympic Studios, released 1968 on Island Records) the defining SME LP, with Stevens, Watts, Derek Bailey, Evan Parker, Kenny Wheeler and Dave Holland in the playing group. SME's continuously-revolving cast across decades included Paul Rutherford (1940–2007), Maggie Nicols (b. 1948), Phil Wachsmann (b. 1944), and many others. Stevens died at home on 13 September 1994, age 54; SME effectively ended with him.
Improvisation is the most natural and widespread form of music-making. Derek Bailey · Improvisation: Its Nature and Practice in Music · Moorland 1980
The third founding pole opens in Sheffield in 1963 with the Joseph Holbrooke trio: Derek Bailey (1930–2005) on guitar, Tony Oxley (1938–2023) on drums and Gavin Bryars (b. 16 January 1943) on double bass. The trio took its name from the largely-forgotten English composer Joseph Charles Holbrooke (1878-1958) as a deliberate misdirection. Initially playing jazz standards, the trio was fully improvised by 1965; their isolation in Sheffield (away from the London developments at AMM and SME) produced a parallel arrival at the form's method. Bryars left the trio in 1966 to study with John Cage; Bailey and Oxley moved to London, where Oxley became the house drummer at Ronnie Scott's (Melody Maker best British jazz drummer four years 1969–72) while continuing his free-improv work. Incus Records was founded in London in 1970 by Bailey, Oxley, Evan Parker and Michael Walters, becoming Britain's first musician-owned free-improvisation label and one of the form's anchors. Bailey's Company working group (founded 1976) and the annual Company Week festival (1977–94) extended the life across two decades, bringing in international figures across the form's extended practitioner network.
The Continental parallels developed within months. The Globe Unity Orchestra formed in Berlin in 1966 by Alexander von Schlippenbach (b. 7 April 1938) as a large-ensemble vehicle; Instant Composers Pool (ICP) formed in Amsterdam in 1967 by Misha Mengelberg (1935–2017), Han Bennink (b. 17 April 1942) and Willem Breuker (1944–2010), the Dutch school's vehicle. FMP / Free Music Production was founded in Berlin in 1968 by Peter Brötzmann (1941–2023), Schlippenbach and the producer Jost Gebers as the German school's anchor. Brötzmann's "Machine Gun" (recorded May 1968, released 1968 on his own Brö label and later on FMP) is the European-school defining recording: a screaming-collective octet statement (Brötzmann + Evan Parker + Willem Breuker + Schlippenbach + Fred Van Hove + Buschi Niebergall + Peter Kowald + Han Bennink + Sven-Åke Johansson) with the rhetorical force of a manifesto. Brötzmann had begun his career as a Fluxus-affiliated visual artist and Nam June Paik assistant before turning to saxophone, providing one of the form's cross-genre genealogical connections.
F·13's relationship to other filed forms is structurally distinctive. F·11 industrial proper is the most direct cross-reference: TG cited Cardew and AMM in early Industrial News materials; Cabaret Voltaire's loop-and-noise practice borrowed AMM tactics directly (Stephen Mallinder cited Rowe's tabletop guitar approach as influence); Coil's John Balance and Peter Christopherson both cited the Bailey-Parker tradition as part of their listening-and-working background. The bridge runs through the London experimental milieu, where members of the early industrial groups attended SME and AMM concerts in the early 1970s. F·01 musique concrète is methodologically adjacent: shared anti-rhetorical position toward conventional sound-organisation, particularly through Rowe's incorporation of radio-and-tape elements into AMM's method (the 1960s avant-garde milieu in which both forms operated). F·10 rhythmic noise has a less-direct connection through Test Dept's early-1980s improvisational origins. F·18 industrial techno + F·14 EBM + F·16 industrial rock are sibling Tier 3 forms; their relation to F·13 is contextual rather than direct genealogical, but the Bureau notes the structural family resemblance: all four are forms downstream from F·11 context filed at Tier 3 because of their non-industrial-tradition founding figures.
The form's life continues into the contemporary moment, though heavily shadowed by the 2020s losses. Cafe OTO (London, founded 2008 by Hamish Dunbar) has emerged as the form's contemporary venue-anchor in Britain; the form's life is healthier in 2026 than at almost any point in its history, with younger generations (Pat Thomas, Steve Noble, Alexander Hawkins, Mark Sanders, Rachel Musson, John Russell's late-period work before his 2021 death) continuing the method. What this file argues for is that free improvisation should be understood as the European-school tradition that explicitly broke with jazz, methodologically central to the avant-garde milieu the industrial tradition emerged from, the form whose bridge into F·11 industrial proper runs through cited AMM/SME/Bailey influence in early TG/CV/Coil materials and the form filed in this archive with the heaviest memorial register. The Bureau holds the form's catalogue with particular weight, given how many of its founding figures are now lost.
Filed by Bureau editor · VAGO · c. the Dark Ages · last revised c. the Jacobean era