"Hyman Paul Bley, CM (November 10, 1932 - January 3, 2016) was a Canadian pianist known for his contributions to the free jazz movement of the 1960s as well as his innovations and influence on trio playing and his early live performance on the Moog and Arp audio synthesizers. Bley was a long-time resident of the United States. His music has been described by Ben Ratliff of the New York Times as "deeply original and aesthetically aggressive." Bley's prolific output includes influential recordings from the 1950s through to his solo piano records of the 2000s.

Bley was born in Montreal, Quebec, on November 10, 1932. His adoptive parents were Betty Marcovitch, an immigrant from Romania, and Joe Bley, owner of an embroidery factory. However, in 1993 a relative from the New York branch of the Bley family walked into Sweet Basil in NYC and informed him that his father was actually his biological parent. At age five Bley studied violin, but at age seven he decided to switch to the piano. By eleven he received a junior diploma from the McGill Conservatory in Montreal. At thirteen he formed a band which played at summer resorts in Ste. Agathe, Quebec. As a teenager he played with touring American bands, including Al Cowan's Tramp Band. In 1949, when Bley was starting his senior year of high school, Oscar Peterson asked Bley to fulfill his contract at the Alberta Lounge in Montreal. The next year Bley left Montreal for New York City and Julliard.

In the 1951, on a return trip to Montreal, Bley organized the Jazz Workshop with a group of Montreal musicians. In 1953 Bley invited the bebop alto saxophonist and composer Charlie Parker to the Jazz Workshop, where he played and recorded with him. When Bley returned to New York City he hired Jackie McLean, Al Levitt and Doug Watkins to play an extended gig at the Copa City on Long Island. In 1953 the Shaw Agency booked Bley and his trio to tour with Lester Young, billed as "Lester Young and the Paul Bley Trio" in ads. He also performed with tenor saxophonist Ben Webster at that time. He then conducted for bassist Charles Mingus on the Charles Mingus and His Orchestra album. Additionally, in 1953, Mingus produced the Introducing Paul Bley album for his label, Debut Records with Mingus on bass and drummer Art Blakey . (In 1960 Bley recorded again with the Charles Mingus Group.)

In 1954 Bley received a call from Chet Baker inviting him to play opposite Baker's quintet at Jazz City in Hollywood, California for the month of March. This was followed by a tour with singer Dakota Staton.

Down Beat Magazine interviewed Bley for its July 13, 1955 issue. The prescient title of the article read, "PAUL BLEY, Jazz Is Just About Ready For Another Revolution." The article, reprinted in Down Beat's 50th Anniversary edition, quoted Bley as saying, "I'd like to write longer forms, I'd like to write music without a chordal center."

Bley's trio with Hal Gaylor and Lennie McBrowne toured across the US in 1956, including a club in Juarez. Mexico. The tour culminated with an invitation to play a 1956 New Year's Eve gig at Lucile Ball and Desi Arnez's home in Palm Springs. During the evening, Bley collapsed on the bandstand with a bleeding ulcer and Lucy immediately took him to the Palm Springs hospital where she proceeded to pay for all of his medical care. Bley, who had met Karen Borg while she was working as a cigarette girl at Birdland in NYC, married her after she came out to meet him in Los Angeles, where she became Carla Bley.

In 1957 Bley stayed in Los Angeles where he had the house band at the Hillcrest Club. By 1958 the original band, with vibe player, Dave Pike, evolved into a quintet with Bley hiring young avant garde musicians trumpet player Don Cherry, alto saxophonist Ornette Coleman, bassist Charlie Haden and drummer Billy Higgins.

In the early 1960s Bley was part of "The Jimmy Giuffre 3," with Giuffre on reeds, and Steve Swallow on bass. Its repertoire included compositions by Giuffre, Bley and his now ex-wife, composer Carla Bley. The group's music moved towards chamber jazz and free jazz. The 1961 European tour of The Giuffre 3 shocked a public expecting Bebop, however the many recordings released from this tour have proven to be classics of free jazz. During the same period, Bley was touring and recording with tenor saxophonist Sonny Rollins, which culminated with the RCA Victor album Sonny Meets Hawk! with tenor saxophonist Coleman Hawkins. Bley's solo on "All The Things You Are" from this album has been called "the shot heard around the world" by Pat Metheny.

In 1964 Bley was instrumental in the formation of the Jazz Composers Guild, a co-operative organization which brought together many free jazz musicians in New York: Roswell Rudd, Cecil Taylor, Archie Shepp, Carla Bley, Michael Mantler, Sun Ra, and others. The guild organized weekly concerts and created a forum for the "October Revolution" of 1964.

In the late 1960s, Bley pioneered the use of the Arp and Moog synthesizers, performing live before an audience for the first time at Philharmonic Hall in New York City on December 26, 1969. This "Bley-Peacock Synthesizer Show" performance, a group with singer/composer Annette Peacock, who had written much of his personal repertoire since 1964, was followed by her playing on the recordings Dual Unity (credited to "Annette & Paul Bley") and Improvisie. The latter was a French release of two extended improvisational tracks with Bley on synthesizers, Peacock's voice and keyboards, and percussion by Dutch free jazz drummer Han Bennink, who had also appeared on part of Dual Unity. [biography continues...]"

"Steve Swallow has long been many jazz critics' favorite electric bassist: rather than playing his instrument in a rock-oriented manner, Swallow emphasizes the high notes and, to an extent, approaches the electric bass as if it were a guitar. He originally started on piano and trumpet before settling on the acoustic bass as a teenager. Swallow joined the Paul Bley trio in 1960 and with Bley was part of an avant-garde version of the Jimmy Giuffre 3 during 1960-1962. Swallow recorded with George Russell and was a member of Art Farmer's quartet (1962-1965), Stan Getz's band (1965-1967), and an important edition of Gary Burton's quartet (1967-1970). The latter group (starting with the addition of guitarist Larry Coryell) was actually one of the first fusion groups, and it was during that time that Swallow began playing electric bass; within a few years, he stopped playing acoustic altogether. Swallow spent a few years in the early '70s living in northern California, during which time he mostly played locally. After the late '70s, he was closely associated with Carla Bley's groups, although he occasionally worked on other projects (including a reunion of the Jimmy Giuffre 3). Swallow has also proved to be a talented composer with "Eiderdown," "Falling Grace," "General Mojo's Well Laid Plan," and "Hotel Hello" among his better-known pieces. The 21st century saw the release of several Swallow sets, including Damaged in Transit (2003), Histoire Du Clochard: The Bum's Tale (2004), and an intriguing set with poet Robert Creeley, So There (2006). Hotel Hello appeared in 2007, followed by Believe in Spring, a collection of standards with Hans Ulrik and Jonas Johansen issued on the Stunt label, and Carla's Christmas Carols in 2008. In 2010, he recorded IS with trumpeter Tore Johanson for the Inner Ear label. Swallow formed We3 along with Adam Nussbaum and David Leibman; they recorded Amazing in 2011. In 2012, he and drummer Joey Barron played in Steve Kuhn's trio for the recording of Wisteria on ECM. It was a busy year for the bassist: he also recorded another duet offering, The Agnostic Chant Book, with reed and woodwind master Jonas Schoen. He led his own quintet for Into the Woodwork, which was issued on Xtra WATT, in June of 2013, and shared triple-billing with Carla Bley and Andy Sheppard on Trios, which was released in September of that year. In 2016, Swallow once again joined Bley and Sheppard for Andando el Tiempo."

"Pete "La Roca" Sims (born Peter Sims; April 7, 1938 - November 20, 2012, known as Pete La Roca from 1957 until 1968) was an American jazz drummer and attorney. Born and raised in Harlem by a pianist mother and a stepfather who played trumpet, he was introduced to jazz by his uncle Kenneth Bright, a major shareholder in Circle Records and the manager of rehearsal spaces above the Lafayette Theater. Sims studied percussion at the High School of Music and Art and at the City College of New York, where he played tympani in the CCNY Orchestra. He adopted the name La Roca early in his musical career, when he played timbales for six years in Latin bands. In the 1970s, during a hiatus from jazz performance, he resumed using his original surname. When he returned to jazz in the late 1970s, he usually inserted "La Roca" into his name in quotation marks to help audiences familiar with his early work identify him. He told The New York Times in 1982 that he did so only out of necessity:

"I can't deny that I once played under the name La Roca, but I have to insist that my name is Peter Sims with La Roca in brackets or in quotes. For 16 or 17 years, when I have not been playing the music, people have known me as Sims....When I was 14 or 15, I thought ["La Roca"] was clever; right now, it's an embarrassment. I thought that it would be something that people would probably remember - boy, was I ever right on that one! I can't make my conversion."

In 1957, Max Roach became aware of him while jamming at Birdland and recommended him to Sonny Rollins. As drummer of Rollins' trio on the afternoon set at the Village Vanguard on November 3 he became part of the important record A Night at the Village Vanguard. (Only one of five recorded tracks with La Roca was included on the original single LP release of the album). In 1959 he recorded with Jackie McLean (New Soil) and in a quartet with Tony Scott, Bill Evans and Jimmy Garrison. Besides Garrison he often joined with bassists who played in the Bill Evans Trio, especially Scott LaFaro and Steve Swallow, and also accompanied pianists like Steve Kuhn, Don Friedman and Paul Bley.

Between the end of the 1950s and 1968, he also played with Slide Hampton, the John Coltrane Quartet, Marian McPartland, Art Farmer, Freddie Hubbard, Mose Allison, and Charles Lloyd, among others. During this period, he led his own group and worked as the house drummer at the Jazz Workshop in Boston, Massachusetts. He recorded two albums as a leader during the mid-1960s, Basra (Blue Note, 1965) and Turkish Women at the Bath (Douglas, 1967).

In 1968, with the market for acoustic jazz in decline, Sims decided to enroll in law school. By this time he was already earning most of his income by driving a taxi cab in New York City, a job he held for five years during the 1960s. Sims became a lawyer in the early 1970s, and was still practicing at the time of a 1997 radio interview with WNYC's Steve Sullivan. When his album Turkish Women at the Bath was re-released on Muse Records as "Bliss" in 1973 under Chick Corea's name (without Sims' consent), Sims filed a lawsuit and served as his own legal counsel. Sims won his suit, and the erroneously-labeled records were recalled.

He returned to jazz part-time in 1979, and recorded one new album as a leader, Swing Time (Blue Note, 1997).

Sims died in 2012 in New York of lung cancer, at the age of 74."