section_path: Post-war jazz/Afro-Cuban jazz (cu-bop)/Machito and Mario Bauza
section_name: Machito and Mario Bauza
paragraph_text: Machito and Mario Bauza
  
  The general consensus among musicians and musicologists is that the first original jazz piece to be overtly based in clave was "Tanga" (1943), composed by Cuban-born Mario Bauza and recorded by Machito and his Afro-Cubans in New York City. "Tanga" began as a spontaneous descarga (Cuban jam session), with jazz solos superimposed on top.
  
  This was the birth of Afro-Cuban jazz. The use of clave brought the African timeline, or key pattern, into jazz. Music organized around key patterns convey a two-celled (binary) structure, which is a complex level of African cross-rhythm. Within the context of jazz, however, harmony is the primary referent, not rhythm. The harmonic progression can begin on either side of clave, and the harmonic "one" is always understood to be "one". If the progression begins on the "three-side" of clave, it is said to be in 3–2 clave (shown below). If the progression begins on the "two-side", it is in 2–3 clave.