Under international copyright law (the Berne Convention), his works remain protected in most countries until at least 70 years after his death—i.e., 2062 .
The “Piazzolla – Oblivion” forum threads are a goldmine. Users debate: piazzolla oblivion imslp
The most reliable way to get accurate sheet music is to purchase the official edition. Oblivion was originally written for chamber orchestra (bandoneón, piano, violin, bass), but it is most famous in piano solo or violin/piano arrangements. "Oblivion" is the second movement of the suite,
"Oblivion" is a tango composition by the renowned Argentine tango musician, Astor Piazzolla, written in 1982. The piece is a part of Piazzolla's broader work, "Las Cuatro Estaciones Porteñas" (The Four Seasons of Buenos Aires), a series of four tango suites inspired by the four seasons. "Oblivion" is the second movement of the suite, corresponding to autumn. corresponding to autumn.