This rock opera was recorded in Argentina in 1974 with the best musicians from that era, including Billy Bond, Kubero Díaz, Manal, Sui Generis, Espíritu, David Lebón and many others from "La Pesada del Rock & Roll", together with the Ensamble Musical De Buenos Aires. Though never before released on CD, this may very well be the best Latin-American symphonic work from those days. Here you get the Argentinian and Brazilian versions, two LP's together on one CD. Included is a 16-page booklet with the lyrics in Spanish, original art and all the info about the production. The Brazilian version was recorded in 1977 in Sao Paulo, produced by Billy Bond together with members from bands s.a. Terço, Som Nosso and Humahuaca.