"Derek Bailey (29 January 1930 - 25 December 2005) was an English avant-garde guitarist and leading figure in the free improvisation movement.

Bailey was born in Sheffield, England. A third-generation musician, he began playing the guitar at the age of ten, initially studying music with his teacher and Sheffield City organist C. H. C. Biltcliffe, an experience that he did not enjoy, and guitar with his uncle George Wing and John Duarte. As an adult he worked as a guitarist and session musician in clubs, radio, dance hall bands, and so on, playing with many performers including Morecambe and Wise, Gracie Fields, Bob Monkhouse and Kathy Kirby, and on television programs such as Opportunity Knocks. Bailey's earliest foray into 'what could be called free improvised music' was in 1953 with two other guitarists in their shared flat in Glasgow. He was also part of a Sheffield-based trio founded in 1963 with Tony Oxley and Gavin Bryars called "Joseph Holbrooke" (named after the composer, whose work they never actually played). Although originally performing relatively "conventional" modal, harmonic jazz this group became increasingly free in direction.

Bailey moved to London in 1966, frequenting the Little Theatre Club run by drummer John Stevens. Here he met many other like-minded musicians, such as saxophonist Evan Parker, trumpet player Kenny Wheeler and double bass player Dave Holland. These players often collaborated under the umbrella name of the Spontaneous Music Ensemble, recording the seminal album Karyobin for Island Records in 1968. In this year Bailey also formed the Music Improvisation Company with Parker, percussionist Jamie Muir and Hugh Davies on homemade electronics, a project that continued until 1971. He was also a member of the Jazz Composer's Orchestra and Iskra 1903, a trio with double-bass player Barry Guy and tromboneist Paul Rutherford that was named after a newspaper published by the Russian revolutionary Vladimir Lenin.

In 1970, Bailey founded the record label Incus with Tony Oxley, Evan Parker and Michael Walters. It proved influential as the first musician-owned independent label in the UK. Oxley and Walters left early on; Parker and Bailey continued as co-directors until the mid-1980s, when friction between the men led to Parker's departure. Bailey continued the label with his partner Karen Brookman until his death in 2005[citation needed].

Along with a number of other musicians, Bailey was a co-founder of Musics magazine in 1975. This was described as "an impromental experivisation arts magazine" and circulated through a network of like-minded record shops, arguably becoming one of the most significant jazz publications of the second half of the 1970s, and instrumental in the foundation of the London Musicians Collective.

1976 saw Bailey instigate Company, an ever-changing collection of like-minded improvisors, which at various times has included Anthony Braxton, Tristan Honsinger, Misha Mengelberg, Lol Coxhill, Fred Frith, Steve Beresford, Steve Lacy, Johnny Dyani, Leo Smith, Han Bennink, Eugene Chadbourne, Henry Kaiser, John Zorn, Buckethead and many others. Company Week, an annual week-long free improvisational festival organised by Bailey, ran until 1994.

In 1980, he wrote the book Improvisation: Its Nature and Practice. This was adapted by UK's Channel 4 into a four-part TV series in the early '90s, edited and narrated by Bailey.

Bailey died in London on Christmas Day, 2005. He had been suffering from motor neurone disease."

"Drummer and multi-instrumentalist Han Bennink was born in Zaandam near Amsterdam in 1942. His first percussion instrument was a kitchen chair. Later his father, an orchestra percussionist, supplied him with a more conventional outfit, but Han never lost his taste for coaxing sounds from unlikely objects he finds backstage at concerts. He is still very fond of playing chairs.

In Holland in the 1960s, Bennink was quickly recognized as an uncommonly versatile drummer. As a hard swinger in the tradition of his hero Kenny Clarke, he accompanied touring American jazz stars, including Sonny Rollins, Ben Webster, Wes Montgomery, Johnny Griffin, Eric Dolphy and Dexter Gordon. He is heard with Gordon on the 1969 album "Live at Amsterdam Paradiso" (on the Affinity label) and with Dolphy on 1964s "Last Date" (PolyGram). At the same time, Bennink participated in the creation of a European improvised music which began to evolve a new identity, apart from its jazz roots. With fellow Dutch pioneers, pianist Misha Mengelberg and saxophonist Willem Breuker, he founded the musicians collective Instant Composers Pool in 1967. Bennink anchored various bands led by Mengelberg or Breuker, and appeared in their comic music-theater productions.

Bennink attended art school in the 1960s, and is also a successful visual artist in several media, often constructing sculpture from found objects, which may include broken drum heads and sticks. He has designed the covers for many LPs and CDs on which he appears. Bennink is represented by Amsterdam's Galerie Espace, and has been the subject of several one-man shows, including one at the Gemeente Museum in the Hague in 1995.

In 1966, Bennink played the US's Newport Jazz Festival with the Mengelberg quartet. From the late 1960s through the '70s Bennink collaborated frequently with Danish, German, English and Belgian musicians, notably saxophonists John Tchicai and Peter Broetzmann, guitarist Derek Bailey and pianist Fred van Hove. Bennink, Broetzmann and van Hove had a longstanding trio well documented on FMP Records. There Bennink also showcased his talents on clarinet, trombone, soprano saxophone and many other instruments, also featured in a series of solo albums he began in 1971.

Bennink's many recordings from the 1980s include sessions with Mengelberg's ICP Orchestra (where he remains), South African bassist Harry Miller, soprano saxophonist Steve Lacy, trombonists Roswell Rudd and George Lewis, and big-bandleaders Sean Bergin and Andy Sheppard.

From 1988 to'98 Bennink's main vehicle was Clusone 3, with saxophonist and clarinetist Michael Moore and cellist Ernst Reijseger, a band noted for its free-wheeling mix of swinging jazz standards, wide-open improvising, and tender ballads. Clusone played Europe and North America, West Africa, China, Vietnam and Australia, and recorded five CDs for Gramavision, hat Art and Ramboy.

Nowadays he is frequently heard with tenor saxophonist Tobias Delius's quartet and in a trio with pianist/keyboardist Cor Fuhler and bassist Wilbert de Joode, and he still collaborates occasionally with jazz luminaries such as Johnny Griffin, Von Freeman and Ray Anderson.

A conspicuous feature of Bennink's musical life since the 1960s is the spontaneous duo concert with musicians of many nationalities and musical inclinations; in the '90s he recorded in duo with among others pianists Mengelberg, Irene Schweizer and Myra Melford, guitarist Eugene Chadbourne, trumpeter Dave Douglas and tenor saxophonist Ellery Eskelin.

Since 2008 Han Bennink has his own Han Bennink Trio consisting of Han Bennink, Joachim Badenhorst on clarinet and Simon Toldam on piano."