Blues, as performed at the Art Blakey Quintet's celebrated February 1954 engagement at Birdland in New York, is a traditional blues head rather than a fixed, titled composition by any single author. The blues form itself is among the oldest and most foundational structures in American music, rooted in the field hollers, work songs, and spirituals of Black Americans in the post-Civil War South, with its characteristic chord progression and call-and-response structure traceable to the late nineteenth century. By the bebop era, the blues had become an essential part of every jazz musician's working vocabulary, and performing an untitled or generically labeled blues was standard practice at jam sessions and club dates. At the Birdland sessions, the quintet of Art Blakey on drums, Clifford Brown on trumpet, Lou Donaldson on alto saxophone, Horace Silver on piano, and Curly Russell on bass used this blues as a vehicle for spontaneous improvisation, with the simple harmonic framework allowing each soloist to stretch out in the live setting. The track appears on A Night at Birdland Vol. 1, where it functions as a blowing vehicle alongside the more formally composed pieces in the set. While blues as a form has shaped virtually every genre of popular music from jazz to rock to rhythm and blues, this particular performance captures the form in its most natural habitat: a late-night New York jazz club where bebop musicians traded choruses over the fundamental changes that undergird the entire tradition.