David Díaz learned the music for matching his body movement with the score. He didn't use background music.
Shot over 3 afternoons in 4 different locations.
David Díaz decided to make the short film after her friend Patricia Rodríguez advise him to do something different. That's why she appears on the credits on "thanks".
The end sequence was shot the first day. The sky that afternoon was overcast, David Díaz decided to shot anyway because it though the sky matched with his character change of mood.