In 1975 he set up his Electronic Octet an octet made up of bandoneon, electric piano and/or acoustic piano, organ, guitar, electric bass, drums, synthesizer and violin, which was later replaced by a flute or saxophone. Later that year Aníbal Troilo died and Piazzolla composed the Suite Troileana in his memory, a work in four parts, which he recorded with the Conjunto Electronico. At this time Piazzolla started a collaboration with the singer Jose A. Trelles with whom he made a number of recordings.
In December 1976 he played at a concert at the Teatro Gran Rex in Buenos Aires, where he presented his work, “500 motivaciones”, written especially for the Conjunto Electronico, and in 1977 he played another memorable concert at the Olympia in Paris, with a new formation of the Conjunto Electronico.
In 1978 he formed his second Quintet, with which he would tour the world for 11 years, and would make him world-renowned. He also returned to writing chamber music and symphonic works.Piazzolla with football star Diego Maradona (center) and singer-songwriter Jairo in Paris, 1981
During the period of Argentine military dictatorship from 1976 to 1983, Piazzolla lived in Italy, but returned many times to Argentina, recorded there, and on at least one occasion had lunch with the dictator Jorge Rafael Videla. However, his relationship with the dictator might have been less than friendly, as recounted in Astor Piazzolla, A manera de memorias (a comprehensive collection of interviews, constituting a memoir):