In late 1985 Cerpa travelled to Colombia, where he headed the "Leoncio Prado" Squad, one of three MRTA squads that participated in a joint military venture with Colombia's M-19 movement and Ecuador's ¡Alfaro Vive, Carajo! and Quintín Lame guerrillas.
Some of the acts performing in the 2007 edition included Andrew Tosh, Gondwana, Ratos de Porao, Hereford, Babasónicos, Attaque 77, Las Pelotas, Rata Blanca, Kapanga, Intoxicados, Las Pastillas del Abuelo, Callejeros, Carajo, Almafuerte, La 25, Los Pericos and others.