"Trevor Charles Watts (born 26 February 1939 in York) is an English jazz and free-improvising alto and soprano saxophonist. He is largely self-taught, having taken up the cornet at age 12 then switched to saxophone at 18. While stationed in Germany with the RAF (1958-63), he encountered the drummer John Stevens and trombonist Paul Rutherford. After being demobbed he returned to London. In 1965 he and Stevens formed the Spontaneous Music Ensemble, which became one of the crucibles of British free improvisation. Watts left the band to form his own group Amalgam in 1967, then returned to SME for another stretch that lasted until the mid-1970s. Another key association was with the bassist Barry Guy and his London Jazz Composers' Orchestra, an association that lasted from the band's inception in the 1970s up to its (permanent?) disbandment in the mid-1990s.

Though he was initially strongly identified with the avant-garde, Watts is a versatile musician who has worked in everything from straight jazz contexts to rock and blues. His own projects have come increasingly to focus on blending jazz and African music, notably the Moiré Music ensemble which he has led since 1982 in configurations ranging from large ensembles featuring multiple drummers to more intimate trios. He has only occasionally recorded in freer modes in recent years, notably the CD 6 Dialogues, a duet album with Veryan Weston (the pianist in earlier editions of Moiré Music). A solo album, World Sonic, appeared on Hi4Head Records in 2005.

Watts has toured the world over numerous times, run workshops, received grants and commissions, and he has collaborated with some of the great jazz musicians including Archie Shepp, Steve Lacy, Don Cherry and Jayne Cortez. As of 2011, he continues to travel and toured North American with Veryan Weston."

Colin McKenzie is a bass guitarist from Dunfermline, Scotland, known for the groups Amalgam, Ranson, McKenzie & Friends, Trevor Watts Moiré Music Drum Orchestra, Trevor Watts Moiré Music Trio, Trevor Watts String Ensemble, Trevor Watts' Moiré Music.

"Keith Tippett (born Keith Graham Tippetts; 25 August 1947) is a British jazz pianist and composer.

Tippett was born in Southmead, Bristol. The son of an English father who was a policeman and an Irish mother name of Kitty. Keith wrote music dedicated to her after she died. Keith was the oldest of three siblings and had Clive and Thomas as brothers. Tippett went to Greenway Secondary Modern school in Southmead, Bristol. He formed his first band when he was fourteen with school friends, such as Richard Murch, Mike Milton, Terry Pratt and Bob Chard. They were called the KT Trad Lads performing Traditional jazz. Later Keith formed a modern jazz trio in Bristol and played regularly at the Dugout Club in Park Row, Bristol. He studied Piano and Church Organ, was a chorister and played with the school and Bristol youth brass bands. He moved to London in 1967, to pursue a musical life.

In the late 1960s, Tippett led a sextet featuring Elton Dean on saxophone, Mark Charig on trumpet and Nick Evans on trombone. Tippett married singer Julie Driscoll and wrote scores for TV.

In the early 1970s, his big band Centipede brought together much of a generation of young British jazz and rock musicians. As well as performing some concerts (limited economically by the size of the band), they recorded one double-album, Septober Energy.

He formed, with Harry Miller and Louis Moholo a formidable rhythm section at the centre of some the most exciting combinations in the country, including the Elton Dean quartet, and Elton Dean's Ninesense. Around the same time, he was also in the vicinity of King Crimson, contributing piano to several of their records including "Cat Food" (and even appearing with them on Top of the Pops). His own groups, such as Ovary Lodge tended towards a more contemplative form of European free improvisation. He continues to perform with the improvising ensemble Mujician and more recently (2006) Work in Progress.

Tippett has appeared and recorded in a wide variety of settings, including a duet with Stan Tracey, duets with his wife Julie Tippetts, solo performances, and appeared on three King Crimson albums."

"Julie Tippetts (born Julie Driscoll, 8 June 1947) is an English singer and actress, known for her 1960s versions of Bob Dylan and Rick Danko's "This Wheel's on Fire", and Donovan's "Season of the Witch", both with Brian Auger and The Trinity. Along with The Trinity, she was featured prominently in the 1969 television special 33 1/3 Revolutions Per Monkee, singing "I'm a Believer" in a soul style with Micky Dolenz. She and Auger had previously worked in Steampacket, with Long John Baldry and Rod Stewart.

"This Wheel's on Fire" reached number five in the United Kingdom in June 1968. With distortion, the imagery of the title and the group's dress and performance, this version came to represent the psychedelic era in British rock music. Driscoll recorded the song again in the early 1990s with Adrian Edmondson as the theme to the BBC comedy series Absolutely Fabulous, the main characters of which are throwbacks to that era.

Since the 1970s, Driscoll has concentrated on experimental vocal music. She married jazz musician Keith Tippett and collaborated with him and now uses the name Julie Tippetts, adopting the original spelling of her husband's surname. She took in Keith Tippett's big band Centipede and in 1974 sang in Robert Wyatt's Theatre Royal Drury Lane concert. She released a solo album, Sunset Glow in 1975; and was lead vocalist on Carla Bley's album Tropic Appetites and also in John Wolf Brennan's "HeXtet".

Later in the 1970s, she toured with her own band and recorded and performed as one of the vocal quartet Voice, with Maggie Nichols, Phil Minton, and Brian Eley.

In the early 1980s, Julie Tippetts was a guest vocalist on an early single by pop-jazz band Working Week, on the song "Storm of Light", which brought them to the attention of a wider audience."