Différencias sobre el canto llano del Caballero (Variations on the Horseman's song)

Thanks to EdoL and LucV, whose so convincing Spanish uploads led me to try something I'd have thought absolutely impossible for me : wandering in Spanish ancien music :-)
So this is a first try a bit "au petit bonheur la chance". Temperament is meantone 1/4, so it sometimes screams a bit :-)

I guess Cabezon's caballero was in a rather dark mood when he sung this song, but I could not find the original lyrics. But there is a Garcia Lorca's poem which matches well, IMHO, with this music :

Horseman's Song

Cordoba.
Distant and alone.
A black nag, the giant moon,
and olives in my saddlebag.

Even if I know the way,
I never will reach Cordoba.
Over the plain, through the wind,
A black nag, the bloody moon.

The Reaper is watching me
From the tall towers of Cordoba.
Oh, such a long road!
Oh, my valiant nag!
Oh, the Reaper awaits me
before I ever reach Cordoba!

Cordoba.
Distant and alone.

- Translation, Charles W. Johnson