In December 1977, Guerrero recorded the studio album "A Tapar La Calle" for Movieplay, produced by Gonzalo García Pelayo, and released in 1978. The song, "A Tapar La Calle", which gave the album its name, was originally a popular song from Extremadura. Guerrero transformed into a song about freedom to commemorate the tenth anniversary of the May 1968 protests in France.