Joseph Albert Morello was an American jazz drummer best known for serving as the drummer for pianist Dave Brubeck, as part of the Dave Brubeck Quartet, from 1957 to 1972, including during the quartet's "classic lineup" from 1958 to 1968, which also included alto saxophonist Paul Desmond and bassist Eugene Wright. Morello's facility for playing unusual time signatures and rhythms enabled that group to record a series of albums that explored them. The most notable of these was the first in the series, the 1959 album Time Out, which contained the hit songs "Take Five" and "Blue Rondo à la Turk". In fact, "Take Five", the album's biggest hit was specifically written by Desmond as a way to showcase Morello's ability to play in 54 time.

David Warren Brubeck was an American jazz pianist and composer. Often regarded as a foremost exponent of cool jazz, Brubeck's work is characterized by unusual time signatures and superimposing contrasting rhythms, meters, and tonalities.