Legendary Spanish musician Rosendo Mercado began playing guitar in 1966, soon teaming up with Valeriano Moreno and playing as La Patata Química and Yesca; he joined the band Fresa in 1972. Two years later, after changing their name to Ñu, the group became one of the most popular bands on the local rock scene. In 1978, Rosendo Mercado formed a threesome called Leño, who left a valuable legacy after they disbanded in the early '80s. In 1985, the singer/guitarist decided to go on his own, recording Locos Por Incordiar, playing with bassist Tato Gómez, keyboardist Andreas Schmidgen, and drummer Sergio Castillo. That album, produced by Carlos Narea, was followed by 1986's Fuera de Lugar and 1987's A Las Lombrices. After leaving RCA-Ariola, Rosendo signed with local label DRO-Gasa, issuing Deja Que les Diga Que No, which was produced by Eugenio Muñoz. In addition, he recorded "Adios a Las Armas" for a collective album called Unidos Por la Paz. He later was found singing and playing guitar on Extremoduro's "La Canción de Los Oficios" and "Perro Callejero," joining Joaquín Sabina on "El Blues de lo Que Pasa en Mi Escalera."
