A concert is an EVENT where performers come together to entertain an audience with music. NEGOTIATE is a nine letter word meaning to come to an AGREEMENT or compromise. HARMONY is a seven letter word meaning the combination of different notes to create a pleasing sound. COINCIDE is an eight letter word meaning to occur at the same time. CHORUS is a six letter word meaning a group of singers performing together. CONSONANCE is a ten letter word meaning a combination of sounds that are pleasing to the ear. ENTERTAINMENT is a thirteen letter word meaning something that provides amusement or enjoyment. CONCORD is a seven letter word meaning AGREEMENT or HARMONY. AGREE is a five letter word meaning to accept or concur with a point of view. UNION is a five letter word meaning the joining of two or more things. ACCORD is a six letter word meaning an AGREEMENT or settlement. AGREEMENT is a nine letter word meaning a negotiated and usually legally binding arrangement between parties. PROM is a four letter word meaning a formal dance or gathering. UNISON is a six letter word meaning the simultaneous performance of the same musical note by two or more voices or instruments. GIG is a three letter word meaning a live performance by a musician or group. RECITAL is a seven letter word meaning a public performance of music or poetry. EVENT is a five letter word meaning something that happens, especially one of importance.