"Adiós Nonino" (English: "Farewell, Nonino") is a renowned tango composition by the Argentine maestro Astor Piazzolla, written in 1959. The piece is a nostalgic and emotional tribute to Piazzolla's father, Juvenal Enrico Piazzolla, whose nickname was "Nonino." The score is available on IMSLP (International Music Score Library Project) for those interested in exploring the musical intricacies.