Afuera comes from Caifanes, the Mexican rock band that became one of the defining acts of Latin alternative rock in the late 1980s and 1990s. The song appeared on El Nervio del Volcán, the band's fourth studio album released in 1994, during the peak of their mainstream success in Mexico and across Latin America. Its driving sound helped cement Caifanes as a bridge between post-punk influences and Spanish-language rock, and the track remains a staple in retrospectives, fan edits and playlists celebrating that era.