The Octeto Buenos Aires was a legendary tango group formed in 1955 by the Argentine bandoneon player Astor Piazzolla. In 1958 the Octeto was disbanded and Piazzolla returned to New York City with his family where he struggled to make a living as a musician and arranger in the next stage of his career that would prove to be so ground-breaking in the history of tango.

Astor Pantaleón Piazzolla was an Argentine tango composer, bandoneon player, and arranger. His works revolutionized the traditional tango into a new style termed nuevo tango, incorporating elements from jazz and classical music. A virtuoso bandoneonist, he regularly performed his own compositions with a variety of ensembles. In 1992, American music critic Stephen Holden described Piazzolla as "the world's foremost composer of Tango music".