The technique that makes the harmony vocals so arresting on "Here Comes Your Man" is retrograde motion- on the word 'long', the two voices go opposite directions, one going higher in pitch, and the other lower. Normally harmonies tend toward parallel motion, but on Here Comes Your Man retrograde motion is used in two different ways- first with the voices separating in pitch from a common first note, and finally with the voices starting separated and merging in pitch on a single note.