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A choir (/ Ë k w aÉª. Ér /) (also known as a quire, chorale or chorus) is a musical ensemble of singers. Choral music, in turn, is the music written specifically for such an ensemble to perform. Choirs may perform music from the classical music repertoire, which spans from the Medieval era to the present, or popular music repertoire.
A choir is a group of singers who perform together, with or without accompaniment from musical instruments. You may also hear a choir referred to as a chorus. Choirs around the world are incredibly varied, from casual secular groups which meet and perform periodically to highly organized church choirs featuring an array of very disciplined singers.