Sui Generis is one of the most important rock and roll (or folk rock) bands in Argentine history, enjoying enormous success and popularity during the first half of the 1970s and a following that has lasted to the present. Although long since disbanded, Sui Generis reunited in 2000 for a concert in Boca Juniors' Stadium in Buenos Aires.
Sui Generis was formed in 1969 by the merging of two bands: "To Walk Spanish", originally led by Carlos Alberto "Charly" García Moreno and "The Century Indignation", originally led by Carlos Alberto "Nito" Mestre. The newly-formed band's member list consisted of, Charly (piano), Nito (flute) Alberto Rodríguez (drums), Alejandro Correa (bass) (later replaced by Rolando Fortich), Juan Carlos Bellia (guitar) and Carlos Piégari (guitar and vocals).
Sui Generis is the predecessor band of SerúGirán and La Máquina De Hacer Pájaros.