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.
During his youth, Piazzolla had served his musical apprenticeship as a tango bandoneonist in a number of orquesta típicas, including those of Aníbal Troilo and Francisco Fiorentino.
Piazzolla was carried away by a certain excess in the music he wrote for this octet, based on the classic tango sextet, with the addition of a cello and an electric guitar (something new for the time).
This manifesto sought to place the commercial aspect in the background; to incorporate arrangements of classic tangos and as well as new creations into the repertoire; to not include sung works; and to not perform at dances, but only on radio, television or in concert, or for recordings.
Piazzolla's first arrangement for the Octeto was the tango Arrabal by José Pascual, which he had dreamed of playing since he first heard Elvino Vardaro’s version of it as a child.
Neither the jazz-like improvisations of Malvicino on electric guitar, for example in Piazzolla's 1955 composition Marrón y Azul, nor the cello solos of the classically trained Bragato had ever been heard before in tango.
The main composers of the Decarean school are also present, including Julio De Caro himself and the bandoneonist Pedro Maffia, as well as their highly regarded counterpart Juan Carlos Cobián, whose works were of great harmonic and melodic interest.
The only surviving original manuscript of an arrangement of the Octeto Buenos Aires is that of the tango Arrabal, since Piazzolla burned a large part of his scores.
The experience did not have enough public to be financially viable, and, furthermore, tango in general was on its way to a major crisis, in full struggle with other popular genres that were emerging, including rock, tropical music, the bolero, etc.