I'm talking about the last notes of Gnarls Barkley's "Crazy" -- the accompaniment cuts off suddenly on a i chord where its progression ought to end, and the vocals continue to riff for a second. Is there a name for when a song ends this way?
EDIT: I tried to notate how it sounded in "Crazy":
EDIT 2: By "tag" I mean a repeatable way to end a song (Jazz theory, sorry 'bout that)