An old Mexican song, Guitarras, Lloren Guitarras., something like Guitars, Cry Oh Guitars. The music is fantastic and it seemed to me he wasn't singing about guitars at all.

Lyrics translation:

Guitarras, lloren guitarras,

Guitars, cry oh guitars

violines lloren igual;

violins you cry as well;

no dejen que yo me vaya

don't let me leave

con el silencio de su cantar.

with your song silenced.

Gritemos a pecho abierto

Let's yell with a full chest

un canto que haga temblar

a song to make tremble

al mundo que es el gran puerto

this world that is the great port

donde unos llegan y otros se van.

where some arrive and others go.

Ahora me toca a mí dejarlas,

Now it's my turn to leave you,

ahora me toca a mi marchar;

now it's my turn to part

guitarras, lloren guitarras

guitars, cry oh guitars

que ahí queda lleno de amor,

that there remains so full of love,

prendido de cada cuerda,

clinging to each string,

llorando a mares mi corazón.

crying oceans, my heart.