Etymology

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. Agreement in a design or plan; union formed by mutual communication of opinions and views; accordance in a scheme; harmony; simultaneous action.
2. Musical accordance or harmony; concord.
3. A musical entertainment in which several voices or instruments take part.

   I'm going to the Rolling Stones concert on Friday.