When I was in high school, I dreamed of visiting Spain and began to study Spanish. Hearing the beautiful young Joan Baez sing this gave that song and that dream power, as did my Maja perfumed soap, and my black lace mantilla.
Bob Dylan wrote this ballad and published it in 1964, on the album called "The Times They are a'Changin," after its the title track.
Here is a poignant rendition by the Lumineers, and here is the equally bluesy version by Dylan himself.
Oddly enough, though I have visited many countries on various continents, I still have never been to Spain.