Samuel Jones was born November 12, 1924, in Jacksonville, Florida, into a musical household: his father played piano and drums, and an aunt played organ in church. As a schoolboy he studied drums and guitar before settling on bass. His professional career began in Cincinnati, where from 1953 to 1955 he played double bass in Tiny Bradshaw's big band, one of the era's hard-touring R&B outfits — a demanding, road-tested apprenticeship for a young bassist.

Jones moved to New York City in 1955 and quickly became one of the most reliable names a bandleader could call. He worked with Kenny Dorham in 1956, had an early, brief association with Cannonball Adderley in 1957, then spent 1958 and into 1959 with Dizzy Gillespie's band before a stint with Thelonious Monk in 1959. He also recorded with Bill Evans during these same formative New York years. It was a fast, thorough education in the working vocabulary of hard bop, delivered by some of the music's most demanding employers.

The defining association of Jones's career began in earnest in 1959, when he joined the Cannonball Adderley Quintet. Paired with drummer Louis Hayes, Jones anchored a rhythm section still cited as a textbook example of a band "in the pocket" — propulsive without rushing, precise without sounding mechanical. Sources differ on exactly when his tenure with Adderley's group ended: some place it as late as 1966, immediately before he joined Oscar Peterson; others, including Wikipedia's own account, put the close of his second stint at 1964 or 1965. What isn't in dispute is that Discogs session credits confirm him on Adderley recordings and live dates at least through 1964, spanning the group's core Riverside-era catalog — The Cannonball Adderley Quintet in San Francisco (1959), Them Dirty Blues (1960), At the Lighthouse (1960), African Waltz (1961), Plus (1961), In New York (1962), and the live Japanese recordings Jazz Workshop Revisited and Nippon Soul (1963). While in the band, Jones contributed original compositions to its book, most famously "Unit 7" and "Del Sasser," along with lesser-known pieces including "Blue Funk," "O.P.," and "Bittersweet." "Unit 7" and "Del Sasser" in particular have long since become independent jazz standards, recorded by generations of players well outside the Adderley lineage.

Jones's standing by 1960 was strong enough that Riverside gave him his own leader dates, and he made the most of the opportunity by recording on both of his instruments. The Soul Society (1960) was his debut as a leader, featuring Nat Adderley, Blue Mitchell, Jimmy Heath, and Bobby Timmons, with Jones splitting time between bass and cello across the program. The Chant (1961), credited to "Sam Jones Plus 10," expanded the group to include Cannonball Adderley himself, Melba Liston, and Victor Feldman. Down Home (1962), billed as "Sam Jones & Co.," rounded out the run with a shifting cast that included Ron Carter, Clark Terry, and arranger Ernie Wilkins. All three records paired his rock-solid bass work with his less common gift as a jazz cello soloist — an instrument few bassists of his generation bothered to double on, let alone recorded as a lead voice.

In 1966, Jones succeeded Ray Brown in the Oscar Peterson Trio — whose own career is covered in full in his JazzProfiles.com profile — and held the chair through 1970, a high-visibility position that put him alongside one of the most demanding pianists in jazz on a nightly basis. After leaving Peterson, Jones spent the 1970s as one of the busiest freelance bassists in New York, working extensively with pianist Cedar Walton. That partnership produced the Eastern Rebellion cooperative band, a working unit of Walton, Jones, drummer Billy Higgins, and a rotating saxophone chair (George Coleman, then Bob Berg), which recorded three albums for the Dutch Timeless label between 1976 and 1980 — a body of work still regarded as some of the finest hard bop of its decade.

The 1970s also saw Jones return to leading his own sessions, spread across a scattering of independent labels: Seven Minds (1975, East Wind, recorded in Tokyo with Walton and Higgins), Cello Again (1976, Xanadu, a cello-focused date with Charles McPherson and Barry Harris), Double Bass (1976, SteepleChase, a duo recording with fellow bassist Niels-Henning Ørsted Pedersen), Something in Common (1978, Muse) and Changes & Things (1978, Xanadu, both featuring Blue Mitchell and Slide Hampton), and The Bassist! (1980, Interplay, with Kenny Barron). Across this stretch he also continued freelancing widely as a sideman and, in his final years, led a big band of his own.

Jones fell seriously ill with lung cancer in the summer of 1981 and died in New York City on December 15 of that year, at 57.

Jones's playing was built on time so steady that bandleaders across two very different eras — Cannonball Adderley's soul-jazz-inflected hard bop and Oscar Peterson's virtuosic trio format — both built their rhythm sections around him without needing to adjust to his sound. His pocket with Louis Hayes in the Adderley band, and later with Billy Higgins in Eastern Rebellion, is repeatedly singled out by critics as a model of rhythm-section chemistry: locked-in but never stiff, capable of driving a blues-drenched groove and a fast bebop head with equal ease. As a composer he left a smaller but disproportionately durable mark: "Unit 7" and "Del Sasser" have outlived nearly everything else recorded on the Adderley albums that introduced them, becoming standard jam-session and recording-session repertoire independent of their original context. What set him apart from most bassists of his generation, though, was the cello: Jones recorded and soloed on it seriously, not as a novelty, on his own Riverside and Xanadu leader dates, giving his catalog a melodic voice most hard-bop bassists never attempted.