Produced by Rodrigo Campello, the 4th (5th if we count the live one, or 6th counting the collaboration with Trio Madeira Brasil) album of Roberta Sá, entitled Delírio, features the carioca singer-songwriter Chico Buarque in the track "Se For Para Mentir", partnership of paulistano singer-songwriter Arnaldo Antunes and baiano songwriter and guitarist Cézar Mendes, released in the voice of Luciana Mello in 2011. Besides Chico, Roberta Sá's album brings along cellist Jaques Morelenbaum, with whom Roberta re-records the song "Última Forma", a compositon of Baden Powell and Paulo César Pinheiro; as long as the portuguese singer António Zambujo, with whom she divides the interpretation of "Covardia", from Ataulfo Alves and Mário Lago, a samba transformed into a fago. Other guests are singer-songwriter Martinho da Vila in "Amanhã É Sábado", a composition of Martinho himself, and singer-songwriter Xande de Pilares, who plays banjo in "Boca em Boca", song that opens his partnership with Roberta. Adriana Calcanhotto doesn't sing in this record, but provides the unreleased "Me Erra" for its repertoire.
Expected to be in the physical markets in Sepetember, the awaited 4th/5th/6th album of Roberta Sá's will be distributed by MP,B Discos, a label of Som Livre records.