concert

Etymology

Borrowed from French concert, from Italian concerto. Doublet of concerto.

verb

1. To plan together; to settle or adjust by conference, agreement, or consultation.
2. To plan; to devise; to arrange.
3. To act in harmony or conjunction; to form combined plans.

noun

1. (uncountable) Agreement in a design or plan; union formed by mutual communication of opinions and views; accordance in a scheme; harmony; simultaneous action.
   All we want is concert, to lay aside all party differences and unite with zeal and energy in repelling approaching dangers. Let there be concert of action, and we shall find ample means of security without resorting to secession or disunion. 1837, John C. Calhoun, Slavery a Positive Good
2. (uncountable) Musical accordance or harmony; concord.
3. (countable) A musical entertainment in which several voices or instruments take part.
   I’m going to the rock concert on Friday.
   Who’s playing at the concert on Friday?
   The Beatles’ final live concert took place on 29 August 1966 at Candlestick Park