Bennie Harris was a self-taught trumpeter and composer from New York City whose original tunes helped define the bebop vocabulary of the 1940s. Though he appeared on relatively few recordings as a performer, his compositions became foundational to the movement. His most celebrated work, Ornithology, co-written with Charlie Parker, stands as one of the essential bebop standards. Crazeology, originally titled Little Benny, was recorded by both Parker and Bud Powell, who released it as Bud's Bubble. Other notable compositions include Reets and I, Lion's Den, and the ballad Mid Nite Lament, as well as the standard shout chorus riff associated with Juan Tizol's Perdido. Harris's writing exemplified early bop aesthetics with complex harmonic movement, syncopated rhythms, and angular melodic lines that served as challenging vehicles for improvisation. He worked alongside key figures of the era, including Dizzy Gillespie, Thelonious Monk, Earl Hines, and Boyd Raeburn. Despite his outsized influence on the bebop repertoire, Harris remained an underrecognized figure during his lifetime and died in San Francisco in 1975 at the age of fifty-five.