The album contains three avant-garde electroacoustic music compositions composed by Italian composer Luigi Nono in his midterm (from the mid 1960s to the 1970s), which are characterized by the use of tape-recorded materials and extreme political messages based on communism.
“Como una ola de fuerza y luz (Like a Wave of Strength and Light)” is a composition for soprano, piano, orchestra, and magnetic tape. It was based on the poem dedicated to Lusiano (Luciano) Cruz, a Chilean revolutionary, and was composed between 1971 and 1972 with the cooperation of Maurizio Pollini and Claudio Abbado. Performed by Slavka Taskova (soprano), Maurizio Pollini (piano), Claudio Abbado (conductor), and Symphonie-Orchester des Bayerischen Rundfunks (Bavarian Radio Symphony Orchestra). Recorded in 1973.
“…..sofferte onde serene… (…..serene waves suffered…)” is a composition for piano and magnetic tape. It was composed in 1976. It was dedicated to both Maurizio and Marilisa Pollini. It contains an interplay between the two pianos played by Maurizio Pollini (a tape recording and a live performance).
“Contrappunto dialettico alla mente (Dialectic Counterpoint for the Mind)” is a composition for two-channel magnetic tape. It was composed in 1968. It is an electroacoustic music composition like a sound collage. It uses as its sound sources voices singing, speaking, and shouting based on texts such as a poem about the assassination of Malcolm X and a pamphlet opposing the Vietnam War. Performed by Liliana Poli (soprano), Cadigia Bove (voice), Marisa Mazzoni (voice), Elena Vicini (voice), Umberto Troni (voice), Coro de camera della RAI, Roma (RAI Chamber Choir, Rome), and Nino Antonellini (chorus master). Recorded in 1969.
The album was released by Deutsche Grammophon in 1988.