Arco Iris was a folk and progressive rock band from El Palomar, Buenos Aires, Argentina formed in 1968. The line-up first started with singer-songwriter leader Gustavo Santaolalla, Ara Tokatlián, bassist Guillermo Bordarampé, drummer Horacio Gianello, and spiritual guide Danais Winnycka.
Gustavo Santaolalla was trying really hard to get signed his band, "The Crows", until he met Ricardo Kleiman, who advised him to sing in spanish. The band changes the name to Arco Iris, and starts recording.

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