Donaldson Toussaint L'Ouverture Byrd II was born December 9, 1932, in Detroit, into a middle-class family; his father was a Methodist minister who valued education highly, and it was his mother's brother who put his first trumpet in his hands. He came up through Cass Technical High School under band director Harry Begian, and was already good enough to perform with Lionel Hampton's orchestra before he had finished high school.

He served in the Air Force from 1951 to 1953, playing in military bands, then returned to Detroit to study music at Wayne State University, graduating in 1954. While still in Detroit he studied bebop with pianist Barry Harris, a fellow Detroit musician who would go on to play piano on Byrd's own recording debut as a leader. In 1955 Byrd moved to New York to pursue a master's degree at the Manhattan School of Music, and it didn't take long for the city's jazz scene to pull him in: he began working with pianist George Wallington's group almost immediately, and within the year he had replaced the late Clifford Brown in Art Blakey's Jazz Messengers. Brown's sound stayed with him: Byrd's own warm, fluent tone was rooted in Brown's style, but his gangly, rhythmically loose phrasing was distinctly his own from the start.

The rest of the 1950s and early 1960s were a run of near-constant sideman and leader dates, mostly for Blue Note, alongside John Coltrane, Sonny Rollins, and Thelonious Monk. From 1958 to 1961 he co-led a quintet with his old friend from Detroit, baritone saxophonist Pepper Adams, a partnership that produced some of his most enduring hard-bop records, including two volumes recorded live at the Half Note Cafe. In 1961 he hired a young pianist named Herbie Hancock into his touring band, giving Hancock his first real national exposure and some of his first advice about publishing rights, guidance Hancock has credited him for ever since. That same year, on Royal Flush, Hancock made his recording debut under Byrd's leadership. Byrd kept pushing his own vision outward, too: he studied composition with the classical pedagogue Nadia Boulanger in Paris in the early 1960s, and 1964's A New Perspective, built around the original "Cristo Redentor," married his working group with a gospel choir.

His turn toward fusion started quietly with 1969's Fancy Free, then accelerated once producers Larry and Fonce Mizell came aboard. 1973's Black Byrd, the first and biggest of the Mizell Brothers albums, moved more than 100,000 copies in six weeks and became Blue Note's best-selling record to that point in the label's history, reaching No. 36 on the Billboard 200. Jazz critics called it a sellout for trading hard bop's edges for funk, soul, and R&B grooves; listeners didn't share the hesitation. Three more Mizell-produced records followed on the same formula: Street Lady (1973), Places and Spaces (1975), and Stepping into Tomorrow (1975), with Caricatures (1976) closing out the run.

In the middle of all of it, in 1973, Byrd formed a band out of his own students at Howard University, where he was teaching and chairing the black music department. He named them The Blackbyrds, produced their records himself, and watched them become hitmakers in their own right: "Walking in Rhythm" reached No. 4 R&B and No. 6 pop, "Happy Music" hit No. 3 R&B and No. 19 pop. Byrd kept recording under his own name too, moving to Elektra for Thank You... For F.U.M.L. (Funking Up My Life) (1978) and, billed with his vocal group Donald Byrd and 125th Street, N.Y.C., Love Byrd (1981, with the single "Love Has Come Around") and Words, Sounds, Colors and Shapes (1982, produced by Isaac Hayes).

Somewhere in the middle of the touring and recording, Byrd found time to earn a law degree from Howard in 1976 and a Ph.D. in music education from Columbia's Teachers College in 1982, on top of teaching posts at Rutgers, Hampton Institute, Howard, NYU, Queens College, Oberlin, Cornell, North Carolina Central, and Delaware State over the course of his career.

By the late 1980s Byrd returned to straight-ahead acoustic jazz for the first time in over fifteen years, recording a run of albums for Landmark Records (Harlem Blues, 1988; Getting Down to Business, 1990; A City Called Heaven, 1991) that paired him with younger players like Kenny Garrett alongside contemporaries such as Joe Henderson and Bobby Hutcherson. The National Endowment for the Arts named him a Jazz Master in 2000. He died February 4, 2013, in Dover, Delaware, at 80, having spent his last decades doing what he'd always done: making records and building the next generation of players.

Byrd's foundational influence was Clifford Brown, whose warm, fluent, aggressive-yet-graceful sound he inherited directly (he was, after all, the player who stepped into Brown's chair in the Jazz Messengers). But Byrd's own phrasing was looser and more rhythmically unpredictable than Brown's from the beginning, and as he matured through the late 1950s and early 1960s he layered in a cooler, more restrained sensibility of his own. His training ran wider than most of his hard-bop peers: bebop lessons with Detroit's Barry Harris, a master's at the Manhattan School of Music, and composition study with the classical pedagogue Nadia Boulanger in Paris, a combination that shows up in the structurally ambitious writing and gospel-choir instrumentation of 1964's A New Perspective.

That same appetite for range is what makes his catalog so hard to summarize in one genre. The same trumpeter who built a reputation on hard-bop dates with Pepper Adams, Coltrane, and Monk also produced, a decade later, some of the most influential jazz-funk records of the 1970s once he began working with producers Larry and Fonce Mizell: records built on dense electric arrangements, vocal hooks, and dance-floor grooves rather than post-bop harmony. Byrd never treated that shift as a rejection of what came before; he treated it, consistently, as the next thing worth trying.