Argentinean folk-rock band Sui Generis was formed in Buenos Aires, Argentina in 1971 by singer, guitarist, and keyboardist Charly García and singer/instrumentalist Nito Mestre, who met while being high school students. Their first record, called Vida, was released in 1972, followed by 1973's Confesiones de Invierno. The following year, bassist Rinaldo Rafanelli and drummer Juan Rodr?guez joined the act, soon recording Peque?as An?cdotas Sobre Las Instituciones. Due to internal discrepancies, the group decided to perform for the last time at Buenos Aires' Luna Park on September 5, 1975.
That farewell concert was recorded and later issued as Adi?s Sui Generis, a double album and documentary considered to be a major event in the Latin American Rock history. The band reunited temporarily in two occasions: One in 1980 to play shows in Montevideo, Uruguay, and Santiago de Chile and in the year 2000, in which Sui Generis returned with the album "Sinfon?a Para Adolescentes" and an brief tour.