noun
large chorus; massed choir
Refers to a large group of singers performing together, or the performance itself. Can also be used figuratively for a chorus of voices or sounds.
コンサートの最後に大合唱が行われた。
A large chorus was performed at the end of the concert.
校庭に生徒たちの大合唱が響
The students' massed chorus echoed across the schoolyard.