I recently watched an obscure 1950s Western called Time to Die. Made in Mexico and directed by Arturo Ripstein, a controversial filmmaker known for building terror subtly through the itchy trigger finger of his camera darting in, out and around the frame. What was noticeable in the movie was the lack of a background soundtrack. No score, no iconic theme, no low-level sound helping viewers understand the emotions of the scene -- whether happy, tragic, somber, comic or somethin