Among friends one has the privilege of saying nothing; the civility consists in the assumption that one's silence will be civilly understood. I can imagine a small gathering of friends who say nothing all evening: they recoil from saying anything that the others don't want to hear; and their silence would be the subtlest courtesy.
Allen TateI believe the term modulation denotes in music the uninterrupted shift from one key to another: I do not know the term for change of rhythm without change of measure.
Allen Tate