Before Oscar Pettiford, the bass in jazz was largely furniture. It kept time, it walked, it stayed out of the way. Pettiford had other ideas. Coming up in the early 1940s, he absorbed the new harmonic language of bebop faster than almost anyone on his instrument and started applying it — long melodic lines, harmonic sophistication, a sense that the bass could actually have opinions about the music it was playing. By the time he was recording with Duke Ellington and leading his own dates, he had fundamentally changed what people expected from a bassist.

His tone was huge and warm without being muddy, and his intonation was exceptional. You can hear it clearly on Bohemia After Dark (1956), his Prestige date that also featured the young Cannonball Adderley — a record that sounds almost impossibly good for something recorded that quickly and that cheaply. Pettiford's playing throughout is authoritative without being showy. He holds the whole thing together and still manages to say something interesting every time he gets space.

The cello thing deserves its own paragraph. Pettiford started playing jazz cello after a broken arm temporarily kept him off the bass, and rather than treating it as a curiosity or a gimmick, he developed a genuine voice on it. He bowed it, he plucked it, he played harmonically complex lines that the instrument had never been asked to play in a jazz context before. There are a handful of recordings where he solos on cello, and they still sound strange and fresh — like hearing a language you recognize being spoken in an accent you've never encountered.

He worked with basically everyone who mattered in the late 1940s and 1950s. Stints with Duke Ellington's orchestra, recordings with Thelonious Monk, collaborations with Coleman Hawkins — Pettiford moved through the New York jazz world like someone who belonged everywhere and owed nobody anything. He was known to be difficult, which in the jazz world of that era often just meant he had standards and wasn't shy about it. The musicians who played with him tended to speak about him with a respect that went beyond politeness.

He spent his last years in Copenhagen, which was a common move for African American jazz musicians who were tired of navigating the racial politics of the American music industry. He recorded there, played there, and died there in 1960 from a virus — still in his thirties, still at the height of his abilities. The recordings he left behind are more than enough to make the case, but it's hard not to feel like the full argument got cut off mid-sentence.