Rosendo Mercado Ruiz, known to Spanish rock fans only by his first name, was born in Madrid on February 23, 1954. Rosendo was brought up in the town of Carabanchel, where he would live for most of his adult life. Having learned guitar at an early age, he dropped out of engineering school as a young adult in order to play full-time. He joined a cover band called Fresa, which with time and some personnel changes became the popular Spanish rock band Nu. After recording an album with the group, Rosendo split off in 1977 due to personality conflicts with some of his bandmates. He t...