Eduardo Gudin is an important Brazilian composer whose songs have been recorded by such names as Dick Farney, João Nogueira, Márcia, Paulinho Nogueira, Paulo César Pinheiro, Quarteto em Cy, Roberto Riberti, Paulinho da Viola, Elizeth Cardoso, Beth Carvalho, Gal Costa, Clara Nunes, MPB-4, Leila Pinheiro, Jair Rodrigues, and others.

He began to learn the violão at 13. He then studied with Antônio Ramos, and later, with Leo Peracchi, Nelson Ayres, and Téo de Barros. At 16, he performed on the TV Record show O Fino da Bossa ("Morena Boca de Ouro," a classic by Ary Barroso also recorded by João Gilberto), invited by host Elis Regina. In 1968, Gudin abandoned the engineering college to dedicate himself exclusively to music, and in the same year was on TV Record's IV FMPB with his "Choro do Amor Vivido" (with Walter de Carvalho), which had arrangements by Hermeto Pascoal and interpretation by Os Três Morais. "Gostei de Ver" (with Marco Antônio da Silva Ramos) received fourth place in the next year's edition of that festival. But, at the IV Festival Universitário da TV Tupi, his song "E lá se Vão Meus Anéis" (with Paulo César Pinheiro) won first place and scored a hit in the interpretation by Os Originais do Samba. Gudin would record that song on his first solo album, released only in 1973 (Odeon), the album had the participation of Jane of Os Três Morais.