chorus

A body of dancers or singers who perform together.

A company of actors who comment (by speaking or singing in unison) on the action in a classical Greek play.

The part of a song where a soloist is joined by a group of singers.

A group of people assembled to sing together.

Any utterance produced simultaneously by a group.

“a chorus of boos”

Sing in a choir.

Utter in unison.

“`yes,' the children chorused”