"Born Remscheid, Germany on 6 March 1941; soprano, alto, tenor, baritone and bass saxophones, a-clarinet, e-flat clarinet; bass clarinet, tarogato.

Peter Brötzmann's early interest was in painting and he attended the art academy in Wuppertal. Being very dissatisfied with the gallery/exhibition situation in art he found greater satisfaction playing with semi-professional musicians, though continued to paint (as well as retaining a level of control over his own records, particularly in record sleeve/CD booklet design). In late 2005 he had a major retrospective exhibition jointly with Han Bennink - two separate buildings separated by an inter-connecting glass corridor - in Brötzmann's home town of Remscheid.

Self-taught on clarinets, he soon moved to saxophones and began playing swing/bebop, before meeting Peter Kowald. During 1962/63 Brötzmann, Kowald and various drummers played regularly - Mingus, Ornette Coleman, etc. - while experiencing freedoms from a different perspective via Stockhausen, Nam June Paik, David Tudor and John Cage. In the mid 1960s, he played with American musicians such as Don Cherry and Steve Lacy and, following a sojourn in Paris with Don Cherry, returned to Germany for his unorthodox approach to be accepted by local musicians like Alex von Schlippenbach and Manfred Schoof.

The trio of Peter Brötzmann, Peter Kowald and Sven-Ake Johansson began playing in 1965/66 and it was a combination of this and the Schoof/Schlippenbach Quintet that gave rise to the first Globe Unity Orchestra. Following the self-production of his first two LPs, For Adolphe Sax and Machine gun for his private label, BRÖ, a recording for Manfred Eicher's 'Jazz by Post' (JAPO) [Nipples], and a number of concert recordings with different sized groups, Brötzmann worked with Jost Gebers and started the FMP label. He also began to work more regularly with Dutch musicians, forming a trio briefly with Willem Breuker and Han Bennink before the long-lasting group with Han Bennink and Fred Van Hove. As a trio, and augmented with other musicians who could stand the pace (e.g. Albert Mangelsdorff on, for example, The Berlin concert), this lasted until the mid-1970s though Brötzmann and Bennink continued to play and record as a duo, and in other combinations, after this time. A group with Harry Miller and Louis Moholo continued the trio format though was cut short by Miller's early death.

The thirty-plus years of playing and recording free jazz and improvised music have produced, even on just recorded evidence, a list of associates and one-off combinations that include just about all the major figures in this genre: Derek Bailey (including performances with Company (e.g. Incus 51), Cecil Taylor, Fred Hopkins, Rashied Ali, Evan Parker, Keiji Haino, Misha Mengelberg, Anthony Braxton, Marilyn Crispell, Andrew Cyrille, Phil Minton, Alfred 23 Harth, Tony Oxley. Always characterised as an energy player - and the power-rock setting of Last Exit with Ronald Shannon Jackson, Sonny Sharock and Bill Laswell, or his duo performances with his son, Casper, did little to disperse this conviction - his sound is one of the most distinctive, life-affirming and joyous in all music. But the variety of Brötzmann's playing and projects is less recognised: his range of solo performances; his medium-to-large groups and, in spite of much ad hoc work, a stability brought about from a corpus of like- minded musicians: the group Ruf der Heimat; pianist Borah Bergman; percussionist Hamid Drake; and Die like a dog, his continuing tribute to Albert Ayler, with Drake, William Parker and Toshinori Kondo. Peter Brötzmann continues a heavy touring schedule which, since 1996 has seen annual visits to Japan and semi-annual visits to the thriving Chicago scene where he has played in various combinations from solo through duo (including one, in 1997, with Mats Gustafsson) to large groups such as the Chicago Octet/Tentet, described below. He has also released a number of CDs on the Chicago-based Okka Disk label, including the excellent trio with Hamid Drake and the Moroccan Mahmoud Gania, at times sounding like some distant muezzin calling the faithful to become lost in the rhythm and power of the music.

The "Chicago Tentet" was first organized by Brötzmann with the assistance of writer/presenter John Corbett in January 1997 as an idea for a one-time octet performance that included Hamid Drake and Michael Zerang (drums), Kent Kessler (bass) and Fred Lomberg-Holm (cello), Ken Vandermark and Mars Williams (reeds), and Jeb Bishop (trombone). The first meeting was extremely strong and warranted making the group an ongoing concern and in September of that same year the band was expanded to include Mats Gustafsson (reeds) and Joe McPhee (brass) as permanent members (with guest appearances by William Parker (bass), Toshinori Kondo (trumpet/electronics), and Roy Campbell (trumpet) during its tenure) - all in all a veritable who's who of the contemporary improvising scene's cutting edge. Though the Tentet is clearly led by Brötzmann and guided by his aesthetics, he has been committed to utilizing the compositions of other members in the ensemble since the beginning. This has allowed the band to explore an large range of structural and improvising tactics: from the conductions of Mats Gustafsson and Fred Lonberg-Holm, to the vamp pieces of Michael Zerang and Hamid Drake, to compositions using conventional notation by Ken Vandermark and Mars Williams, to Brötzmann's graphic scores - the group employs almost every contemporary approach to composing for an improvising unit. This diversity in compositional style, plus the variety in individualistic approaches to improvisation, allows the Tentet to play extremely multifaceted music. As the band moves from piece to piece, it explores intensities that range from spare introspection to all out walls of sound, and rhythms that are open or free from a steady pulse to those of a heavy hitting groove. It is clear that the difficult economics of running a large band hasn't prevented the group from continuing to work together since its first meeting. Through their effort they've been able to develop an ensemble sound and depth of communication hard to find in a band of any size or style currently playing on the contemporary music scene."

"Joe McPhee, born November 3,1939 in Miami, Florida, USA, is a multi-instrumentalist, composer, improviser, conceptualist and theoretician. He began playing the trumpet at age eight, taught by his father, himself a trumpet player. He continued on that instrument through his formative school years and later in a U.S. Army band stationed in Germany, at which time he was introduced to performing traditional jazz. Clifford Thornton's Freedom and Unity, released in 1969 on the Third World label, is the first recording on which he appears as a side man. In 1968, inspired by the music of Albert Ayler, he took up the saxophone and began an active involvement in both acoustic and electronic music.

His first recordings as leader appeared on the CJ Records label, founded in 1969 by painter Craig Johnson. These include Underground Railroad by the Joe McPhee Quartet (1969), Nation Time (1970), Trinity (1971) and Pieces of Light (1974). In 1975, Swiss entrepreneur Werner X. Uehlinger release Black Magic Man by McPhee, on what was to become Hat Hut Records.

In 1981, he met composer, accordionist, performer, and educator Pauline Oliveros, whose theories of "deep listening" strengthened his interests in extended instrumental and electronic techniques. he also discovered Edward de Bono's book Lateral Thinking: A Textbook of Creativity, which presents concepts for solving problems by "disrupting an apparent sequence and arriving at the solution from another angle." de Bono's theories inspired McPhee to apply this "sideways thinking" to his own work in creative improvisation, resulting in the concept of "Po Music." McPhee describes "Po Music" as a "process of provocation" (Po is a language indicator to show that provocation is being used) to "move from one fixed set of ideas in an attempt to discover new ones." He concludes, "It is a Positive, Possible, Poetic Hypothesis." The results of this application of Po principles to creative improvisation can be heard on several Hat Art recordings, including Topology, Linear B, and Oleo & a Future Retrospective.

In 1997, McPhee discovered two like-minded improvisers in bassist Dominic Duval and drummer Jay Rosen. The trio premiered at the Vision Jazz Festival in 1998 but the concert went unnoticed by the press. McPhee, Duval, and Rosen therefore decided that an apt title for the group would be Trio X. In 2004 he created Survival Unit III with Fred Lonberg-Holm and Michael Zerang to expand his musical horizons and with a career spanning nearly 50 years and over 100 recordings, he continues to tour internationally, forge new connections while reaching for music's outer limits."

"Kent Kessler (born January 28, 1957 in Crawfordsville, Indiana) is an American jazz double-bassist, best known for his work in the Chicago avant-garde jazz scene.

Kessler, born in Crawfordsville, Indiana, grew up on Cape Cod and began playing trombone at age ten. He and his family moved to Chicago when he was 13, and a few years later Kessler became intensely interested in jazz. While attending St. Mary Center for Learning High School, he began taking lessons from Kestutis Stanciauskas (Streetdancer) in electric bass and jazz theory in the middle of the 1970s. In 1977 he formed the ensemble Neutrino Orchestra with percussionist Michael Zerang and guitarists Dan Scanlan and Norbert Funk. He spent three months in Brazil during 1980-81 and spent time studying intermittently at Roosevelt University in Chicago; he and Zerang also formed a group called Musica Menta, which played regularly at Link's Hall.

Kessler began playing double bass in the 1980s and it became his primary instrument when he was asked in 1985 to join the NRG Ensemble, who toured Europe and recorded for ECM Records under the leadership of Hal Russell until his death in 1992. In 1991, he gigged with Zerang and guitarist Chris DeChiara; in need of a hornist, they called Ken Vandermark, who had been considering leaving the Chicago scene. Kessler and Vandermark would go on to collaborate extensively on free jazz and improvisational projects such as the Vandermark 5, the DKV Trio and the Steelwool Trio. In the 1990s and afterwards he worked with Chicago musicians such as Hamid Drake, Fred Anderson, and Joe McPhee, and also with European musicians such as Peter Brötzmann, Mats Gustafsson, Misha Mengelberg, and Luc Houtkamp.

In 2003, Kessler released a solo album, Bull Fiddle, on Okka Disk. Kessler performs alone on nine of the twelve tracks, and with Michael Zerang on three."

"Michael Zerang was born in Chicago, Illinois, and is a first-generation American of Assyrian decent. He has been a professional musician, composer, and producer since 1976, focusing extensively on improvised music, free jazz, contemporary composition, puppet theater, experimental theater, and international musical forms.

Michael has collaborated with contemporary theater, dance, and other multidisciplinary forms and has received three Joseph Jefferson Awards for Original Music Composition in Theater, in collaboration with Redmoon Theater, in 1996, 1998, and 2000.

As a percussionist and composer, Michael has over eighty titles in his discography and has toured nationally and internationally to 34 countries since 1981, and works with and ever-widening pool of collaborators.

Michael founded and was the artistic director of the Link's Hall Performance Series in Chicago from 1985-1989 where he produced over 300 concerts of jazz, traditional ethnic folk music, electronic music, and other forms of forward thinking music. Michael has been a Board Member of Links Hall Since 1989. He continued to produce concerts at Cafe Urbus Orbis from 1994-1996, and at his own space, The Candlestick Maker in Chicago's Albany Park neighborhood, from 2001 - 2005.

Michael has taught as a guest artist at The School of the Art Institute of Chicago in performance technique, sound design, and sound/music as it relates to puppetry; rhythmic analysis for dancers at The Dance Center of Columbia College, Northwestern University, and MoMing Dance and Arts Center; courses in Composer/Choreographer Collaborations at Northwestern University; music to children at The Jane Adams Hull House.

Michael currently tours and holds workshops in improvisational music, and teaches private lessons in rhythmic analysis, music composition, and percussion technique.