"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."

"Stephen Paul Motian (March 25, 1931 - November 22, 2011) was an American jazz drummer, percussionist, and composer. Motian played an important role in freeing jazz drummers from strict time-keeping duties.

He first came to prominence in the late 1950s in the piano trio of Bill Evans, and later was a regular in pianist Keith Jarrett's band for about a decade (c. 1967-1976). Motian began his career as a bandleader in the early 1970s. Perhaps his two most notable groups were a longstanding trio of guitarist Bill Frisell and saxophonist Joe Lovano, and the Electric Bebop Band which featured the drummer working mostly with younger musicians doing interpretations of bebop standards.

Motian was born in Philadelphia, Pennsylvania, and raised in Providence, Rhode Island. He is of Armenian descent. After playing guitar in his childhood, Motian began playing the drums at age 12, eventually touring New England in a swing band. During the Korean War he joined the Navy.

Motian became a professional musician in 1954, and briefly played with pianist Thelonious Monk. He became well known as the drummer in pianist Bill Evans's trio (1959-64), initially alongside bassist Scott LaFaro and later with Chuck Israels.

Subsequently, he played with pianists Paul Bley (1963-64) and Keith Jarrett (1967-76). Other musicians with whom Motian performed and/or recorded in the early period of his career included Lennie Tristano, Warne Marsh, Lee Konitz, Joe Castro, Arlo Guthrie (Motian performed briefly with Guthrie in 1968-69, and performed with the singer at Woodstock), Carla Bley, Charlie Haden, and Don Cherry. Motian subsequently worked with musicians such as Marilyn Crispell, Bill Frisell, Leni Stern, Joe Lovano, Alan Pasqua, Bill McHenry, Stéphan Oliva, Frank Kimbrough, Eric Watson and many more.

Later in his career, Motian became an important composer and group leader, recording initially for ECM Records in the 1970s and early 1980s and then for Soul Note, JMT, and Winter & Winter before returning to ECM in 2005. From the early 1980s he led a trio featuring guitarist Bill Frisell and saxophonist Joe Lovano, occasionally joined by bassists Ed Schuller, Charlie Haden, or Marc Johnson, and other musicians, including Jim Pepper, Lee Konitz, Dewey Redman and Geri Allen. In addition to playing Motian's compositions, the group recorded tributes to Thelonious Monk and Bill Evans, and a series of Paul Motian on Broadway albums, featuring original interpretations of jazz standards.

Despite his important associations with pianists, Motian's work as a leader since the 1970s rarely included a pianist in his ensembles and relied heavily on guitarists. Motian's first instrument was the guitar, and he apparently retained an affinity for the instrument: in addition to his groups with Frisell, his first two solo albums on ECM featured Sam Brown, and his Electric Bebop Band featured two and occasionally three electric guitars. The group was founded in the early 1990s, and featured a variety of young guitar and saxophone players, in addition to electric bass and Motian's drums, including saxophonists Joshua Redman, Chris Potter, Chris Cheek, and Tony Malaby, and guitarists Kurt Rosenwinkel, Brad Shepik, Wolfgang Muthspiel, Steve Cardenas, Ben Monder, and Jakob Bro.

In 2011 Motian featured on a number of new recordings, including Live at Birdland (with Lee Konitz, Brad Mehldau and Charlie Haden), Samuel Blaser's Consort in Motion, No Comment by Augusto Pirodda, and Further Explorations with Chick Corea and Eddie Gómez. Bill McHenry's Ghosts of the Sun was released - by coincidence - on the day of Motian's death. Motian's final album as bandleader was The Windmills of Your Mind, featuring Bill Frisell, Thomas Morgan and Petra Haden.

Motian died on November 22, 2011 at New York's Mount Sinai Hospital of complications from myelodysplastic syndrome."