sing-off (plural sing-offs)
- A competition between two or more singers where each tries to do better than the last.
2014, Cathy Bramley, Conditional Love, page 316:The two of them engaged in a sing-off until they realized that both tunes had the same beat.
2015, Ethan Mordden, Sing for Your Supper: The Broadway Musical in the 1930s, page 76:This really is Anything Goes, not just a Cole Porter sing-off using portions of the Anything Goes narrative.
2015, Steve Brookstein, Getting Over the X, page 49:There's nothing like the life-or-death drama of an X Factor sing-off.