Finally, on September 5, 1975, Sui Generis said goodbye, in the Luna Park Stadium, with two shows for 20,000 people, the biggest in the history of Argentinian rock at the time.
In 1976, Sui Generis recorded an LP with Argentinian musicians León Gieco and Raúl Porchetto (whose music resembled Gieco's in a softer pop version) as well as María Rosa Yorio.