Lalo Duarte

Lalo Duarte (ex-singer of Los Verdugos) had tried to give shape to a solo project. It was the height of the Onda Chicana, the name was changed to the pseudonym of Rosario (15) y La Libre Expresión. At the same time, he collaborated on some recordings of the Banda Macho. He went to Discos Zave, with whom he signed as La Libre Expresion. In 1972, he decided to dissolve La Libre Expresión, a fact that gave rise to the formation of the Grupo Yndio.