Gustavo Santaolalla has composed film scores for over a dozen features including “Amores Perros,” “The Motorcycle Diaries,” “Brokeback Mountain,” “Babel,” “On the Road,” and “Wild Tales.” His latest solo album is called “Camino.” This interview is edited and produced with music and other features in the On Being episode “Gustavo Santaolalla — How Movie Music Moves Us.” Find more at onbeing.org.