Ricardo Iorio and Ricardo "Chofa" Moreno met at age 16, in July 1978 during a screening of the film "The Song Remains the Same" by Led Zeppelin. They became friends, and formed a cover band with Carlos Aragone and Sandro Castaña. They started playing Black Sabbath songs, but soon began composing their first songs, based on characters from the neighbourhood. Castaña leaves the group and they tried with other drummers such as Carlos Ramos, who in turn invited the guitarist Osvaldo Civile to try to join the band but who was not accepted. With Pichi Correa they played three more times, now under the name "Comunión humana".