In 1954 he took part in a homage to Juan Carlos Cobián in a quintet comprising the tango musicians Aníbal Troilo on bandoneon, Roberto Grela on guitar, Kicho Díaz on double bass and Horacio Salgán on piano.
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The following year he joined Astor Piazzolla’s Octeto Buenos Aires with the bandoneons of Piazzolla and Roberto Pansera (later replaced by Leopoldo Federico), the violin of Hugo Baralis, the cello of José Bragato, the double bass of Aldo Nicolini (later replaced by Juan Vasallo), the electric guitar of Horacio Malvicino and the piano of Atilio Stampone.
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Next he formed the Quinteto Real with Horacio Salgán, Pedro Laurenz and Ubaldo de Lío and also set up an orchestra, Los Astros del Tango, with Elvino Vardaro to record tango compositions of the top tango composers of the time, with arrangements by Argentino Galván.
Mario | Enrique Iglesias | Super Mario Bros. | Mario Testino | Mario Vargas Llosa | Mario Lemieux | Mário Soares | Mario Lanza | Mario Botta | Mario Cuomo | Mario Andretti | Enrique Chagoya | Mario Monti | Mario del Monaco | Mario Batali | Mario Balotelli | Enrique Peñalosa | Mario Winans | Mario Savio | Mario Puzo | Mario Bava | Mario Van Peebles | Mario Sorrenti | Mario Merz | Mário de Andrade | Enrique Guzmán | Mario Morales | Mario Martone | Mario Lopez | Mario Borghezio |
He composed tangos, not only with his brother Virgilio Expósito, but with famous musicians like Aníbal Troilo (Te llaman malvelo), Domingo Federico (Percal, Yuyo verde, Tristezas de la calle Corrientes, Al compás del corazón), Armando Pontier (Trenzas), Enrique Mario Francini (Ese muchacho Troilo), Héctor Stamponi (Flor de lino), Osmar Maderna (Pequeña), Argentino Galván (Cafetín) and Atilio Stampone (Afiches).
In 1962 he joined Quinteto Real with Horacio Salgán (piano), Ubaldo de Lío, Enrique Mario Francini (violin) and Pedro Laurenz (badoneon) and occasionally played with the orquestra of Mariano Mores.