Harry Garcia goes into some detail about the filming:

This is a visual experiment based on Gabriela Mistral poem “The Sad Mother”. All shoot with a Nikon D90 on a cold late October evening.

Lens: Nikkor 50mm 1.4. All lighting controlled with manual aperture. We took advantage of a couple good tricks to “tease” the D90, flashing right at the lens on “Aperture” mode to force the camera to lower down the ISO speed in order to eliminate any grain or noise. Then we locked the exposure with this settings and controlled light exclusively with manual apertures. Another reason for Nikon to add full manual control to our beloved D90!

The audio is from Daily Poetry Reading by Karin. For those who know Spanish, here’s the original poem:

La Madre Triste

Duerme, duerme, dueño mío,
sin zozobra, sin temor,
aunque no se duerma mi alma,
aunque no descanse yo.

Duerme, duerme y en la noche
seas tú menos rumor
que la hoja de la hierba,
que la seda del vellón.

Duerma en ti la carne mía,
mi zozobra, mi temblor.
En ti ciérrense mis ojos:
¡duerma en ti mi corazón!