Cacaso was one of the most important poets of the '70s, having written lyrics for 200 songs with illustrious partners like Edu Lobo, Egberto Gismonti, Miúcha, Eduardo Gudin, João Donato, Filó Machado, Jards Macalé, Sivuca, Maurício Maestro, Cláudio Nucci, Carlinhos Vergueiro, Novelli, and João Bosco. He had his songs recorded by Tom Jobim, Os Cariocas, Maria Bethâni ("Amor, Amor"), Simone ("Face a Face"), Pery Ribeiro ("Nó Cego," with Toquinho), Emílio Santiago ("Angu de Caroço," with Edu Lobo), A Barca do Sol ("Cavalo-Marinho," with Nando Carneiro), Olívia Byington ("Cavalo-Marinho"), Milton Nascimento ("Carro de Boi," included in his LP Gerais), Nana Caymmi ("Branca Dias," with Edu Lobo, and "Eu Te Amo," with Sueli Costa). Cacaso also wrote seven books of poems. He composed the soundtrack for the film Canudos (Sérgio Rezende) with Edu Lobo, and he penned the musical Táxi with Nelson Ângelo.
His first song to be recorded was "Carro de Boi" (with Maurício Tapajós), by Os Cariocas in 1963. Three years later he wrote the soundtrack for the opera João Amor e Maria (Hermínio Bello de Carvalho) with Maurício Tapajós and Hermínio Bello de Carvalho. The soundtrack included his songs "Luta Danada," "Tira O Peixe do Mar," "Tempo Bravo," "Jangada," "Foi Milagre," and "Não Adianta Não" (all with Maurício Tapajós), and "Modinha" (with Maurício Tapajós/Hermínio Bello de Carvalho). In 1968, Paulinho da Viola recorded "Meu Carnaval" (with Élton Medeiros). In 1975, Sueli Costa recorded "Dentro de Mim Mora Um Anjo," which was included in the soundtrack of the soap opera Bravo and re-recorded with success by Fafá de Belém. In the next year, he started his partnership with Edu Lobo, who recorded three of the duo's songs on the LP Limite das Águas. Two years later, Edu Lobo recorded several other creations by both composers, including the hit "Lero-Lero." Elis Regina interpreted "Meio-Termo" (with Lourenço Baeta) in her show and recorded the song on her 1978 album, Transversal do Tempo. Lourenço Baeta recorded several compositions by the duo -- like "Feito Mistério," "Santa Marina," "Festa no Céu," "Meio-Termo," and "Dia dos Pais" (with Sidney Matos) -- on his first solo LP, which was released in the next year. In the '80s, he had his compositions recorded by several other interpreters and partners, like Elba Ramalho ("Cartão Postal"), Boca Livre ("Pedra da Lua," "Feito Mistério," and "Um Canto de Trabalho"), Chico Buarque, and Tom Jobim ("Dinheiro em Penca," with Tom Jobim). Djavan recorded two songs written with him: "Lambada de Serpente" and "Morena de Endoidecer." Francis Hime also recorded several partnerships with Cacaso, like "Cabelo Pixaim," "Meio Demais," "Baião de Jeito," "Elas por Elas," "Marina Morena," and "Grão de Milho." In 1980, Maurício Tapajós recorded "Falando de Cadeira" (with Tapajós) for his LP Olha Aí. In 1981, Joyce recorded "Beira Rio" (with Joyce). In the next year, Tom Jobim and Miúcha recorded "Nó Cego" (with Toquinho). Also in 1982, Amelinha recorded "Profunda Solidão" (with Novelli). Two years later, Filó recorded two of his compositions written with Cacaso: "Perfume de Cebola" and "Cavalo do Cão" in his Canto Fatal. In 1985, Olívia Hime recorded "O Fio da Meada" (with Francis Hime). Francis Hime recorded "Se Porém Fosse Portanto" and "Terceiro Amor" (Cacaso/Hime). In 1986, Selma Reis recorded "O Que Será Que Serei" (with Nelson Ângelo). In 1987, Cacaso recorded the LP Moda Sentimental, including "Clarão" (with Olívia Byington). In 1991, Beth Carvalho included "Agradecer" (with Sueli Costa) on her LP Intérprete. In 1992, Muri Costa recorded "Chega de Tarde" (with Danilo Caymmi). Aldir Blanc included "Vim Sambar" (with Aldir Blanc/João Bosco), interpreted by Arranco de Varsóvia in his 1996 album Aldir Blanc 50 Anos. Two years later, Chico Buarque recorded "Feito Mistério" (with Lourenço Baeta) in Boca Livre's Song Boca. In 1999, Nana Caymmi included "Chega de Tarde" (with Danilo Caymmi) on her CD Resposta ao Tempo. In 2000, Carlos Navas launched "Lua de Vintém" (with Zé Renato) on his Sua Pessoa and Sueli Costa recorded "Dona Doninha" and "Senhora de Si" (both with Sueli Costa). In 2001, Élton Medeiros re-recorded "Aurora da Paz" (with Medeiros) on his homonymous CD (the song had been recorded in the '60s by Os Cinco Crioulos).