"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."

"Agustí Fernández (Palma de Mallorca, 1954), with a perfectly based career and a well-deserved international reputation, is one of the Spanish musicians of major international projection and a world reference in the field of improvised music. Fernández has worked with famous musicians of the free improvisation scene like Peter Kowald, Derek Bailey, Butch Morris, Evan Parker, Barry Guy, Mats Gustafsson, Joel Ryan and Peter Evans a.m.o. He is a member of the Blue Shroud Band, Mats Gustafsson NU Ensemble and Barry Guy New Orquestra. Up to the current date he has published more than 80 CD's

He has also worked with the recognised composer of contemporary music Héctor Parra, who composed in collaboration with the pianist FREC, a solo for expanded piano. FREC has been premiered at the Huddersfield Contemporary Music Festival in 2013 with the collaboration of the video artist Lucas Caraba. He has conducted various improvised music ensembles like Ad Libitum Ensemble (Varsaw), Free Art Ensemble (Barcelona), Ansambl Studio 6 (Lujbljana) Orquesta FOCO (Madrid), Entenguerengue (Jérez de la Frontera), Impromtu Ensemble (Valencia), etc.

Along his professional life Agustí Fernández has received much recognition. His solo for piano "Mutza" presented in New York in 2007 was distinguished by the New York magazine AllAboutJazz as one of 10 best concerts from that year. The CD "Un llamp que no s'acaba mai" on PSI (Agustí Fernández, John Edwards and Mark Sanders) has been distinguished by Allaboutjazz as one of the best 10 cd's in 2009; the CD "Aurora" on Maya Recordings (Agustí Fernandez, Barry Guy and Ramón López) was selected by Cuadernos de Jazz magazine as the best CD in 2007, by the Jaç magazine as the best fourth disc of the history of the Catalan jazz and it was Disc d'émoi (February, 2007) for the French Jazz Magazine. The "Agustí Fernández Aurora Trio" received the second prize at the BMW Welt Jazz Award 2012 celebrated in Münich, Germany. In 2000 he received the Festival Altaveu Award, Sant Boi de Llobregat (Catalonia). In 2001 he received the FAD - Sebastià Guasch Award, Barcelona (Cataluña) with Andrés Corchero por el or the performance "A modo de esperanza". In 2011 Agustí Fernández was the main character of the documentary film "Los dedos huéspedes" by Lucas Caraba, which has been screened in several international festivals of documentary. In 2014 the Ad Libitum Festival (Warsaw) dedicated a monographic edition to celebrate Fernández's 60th Birthday.

He's professor of improvised music at the Escuela Superior de Música de Catalunya (ESMUC). He's developing an important teaching activity in the field of improvised music and, among other, he has been teaching in IRCAM in Paris, the Estonian Academy of Music and Theatre de Tallin, the Royal Conservatory in The Hague (Holland), the Conservatory in Arhem (Holland), the Taller de Músicos in Gijón (Spain), the Taller de Músics in Barcelona (Spain) and the Conservatorio Superior de Música in Salamanca (Spain)."