Renato Russo originally intended Dois as a double-disc album named "Mitologia e Intuição" ("Mythology and Intuition"), including some material later recorded for Que País É Este, but EMI-Odeon denied the proposal. Unlike Legião's previous album, heavily influenced by post-punk instrumentation and themes, Dois shows a wider palette of styles and influences such as folk rock and blues, including "Eduardo e Mônica", a ballad said by Russo to be largely inspired by Bob Dylan; "Música Urbana 2", a spiritual sequel to one of Russo's Aborto Elétrico composition ("Música Urbana" was recorded by Capital Inicial on their debut album); "Fábrica", a classic concert-opener; "Quase sem Querer"; and "Índios", according to Russo, a "suicide song".

In 2007, the Brazilian edition of Rolling Stone magazine featured Dois in the 21st position on a list of the 100 greatest Brazilian albums. On September 2012, it was elected by the audience of Radio Eldorado FM, of Estadao.com e of Caderno C2+Música (both the latter belong to newspaper O Estado de S. Paulo) as the third best Brazilian album ever. By the time of the album's release, the newspaper also said: "You bite it and see there is meat there. Bleeding. The little taste of Smiths on side A, with lyricist and vocalist Renato Russo singing a lot on Daniel na Cova dos Leões or Tempo Perdido, actually just prepares the ground for the punch of side B, as in Metrópole and Fábrica."

All lyrics written by Renato Russo; all music composed by Legião Urbana.

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