in concert Definition

concert
noun

1. A musical performance given before an audience by singers or players.

Thesaurus: performance, show, recital.
2. Agreement; harmony.

Thesaurus: harmony, accord, concord, agreement, unity.

verb

concerted, concerting
1. To endeavour or plan by arrangement.

Idiom: in concert

Jointly; in co-operation.

Said of singers, musicians, etc: in a live performance.

Etymology: 16c: French, from Italian concerto, from concertare to organize.