"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."

"Yoshisaburo "Sabu" Toyozumi (born Tsurumi, Yokohama, 1943) is one of the small group of musical pioneers who comprised the first generation playing free improvisation music in Japan. As an improvising drummer he played and recorded with many of the key figures in Japanese free music including the two principal figures in the first generation, Masayuki Takayanagi and Kaoru Abe from the late 1960s onwards. He is one of a very few of this circle who are still alive and engaged in playing this music today.

Toyozumi features on numerous commercially available recordings with many of the most notable Japanese and international improvising musicians including Derek Bailey, Mototeru Takagi, Misha Mengelberg, Peter Brötzmann, Keiji Haino, Otomo Yoshihide, Tom Cora and Fred Van Hove.

In 1971 he became the only non-American member of the Association for the Advancement of Creative Musicians(AACM)). He dedicated his first record as a leader, Sabu - Message to Chicago, to compositions by AACM members, and in 1992 toured and recorded with AACM trumpeter Wadada Leo Smith.

Toyozumi has been instrumental in bringing many European and American improvisers to Japan including Derek Bailey, Misha Mengelberg and Sunny Murray.

In 2005 British improvising guitarist and promoter John Russell arranged a two-day event dedicated to Toyozumi in which the drummer performed in different groupings with 14 musicians from the London improvised music scene including, most notably, Evan Parker, Lol Coxhill, Phil Minton, John Edwards and Steve Beresford. The Wire described his playing at this time as follows: "He's busy, but there's always space between his notes, and he avoids the flashy technical solution to musical problems. His playing is crisp and dramatic, with a very occasional use of repetition to spark a climax. If it's possible for a drum kit to ask awkward questions, Toyozumi seems to be doing it".

In an interview with Cadence Magazine in 1988 Toyozumi makes clear the importance of his relationship with nature as an influence on his playing and Clive Bell writing in The Wire in 2005 notes "his devotion to the way of Watazumido, the late shakuhachi player and Zen master, whose performances mixed martial arts and music in a bizarre cocktail of discipline and craziness".

In 2009 he returned to London to feature as one of the players in Russell's improvisation festival Fete Quaqua which was recorded for broadcast by BBC Radio 3. He continues to tour widely and in the past year or so has performed in Belgium and France, Chile, Taiwan, England, Philippines and Greece. He also performs from time to time with the legendary Japanese noise group Hijokaidan. Currently he can be found performing on the erhu - a two-stringed Chinese violin - as often as playing the drums."