"La chica de ayer" is a famous song by the Spanish rock band Nacha Pop, released in 1980. It is considered a classic of the Movida Madrileña, a cultural movement that emerged in Madrid after the end of Franco's dictatorship. The song captures the spirit of youth and nostalgia, reflecting the feelings of a generation seeking freedom and identity. The lyrics tell the story of a girl who represents lost opportunities and unfulfilled dreams. The song's catchy melody and poignant lyrics have made it an anthem for many, resonating with listeners who relate to its themes of love and longing.