Choir (noun)

1. A group of people who sing together, especially in a church or religious setting.
2. A group of singers in an opera or concert.

Origin:

From old english cyrice, from latin chorus ("choir, chorus, company"), from ancient greek χορός (khorós, "dancing place, chorus of singers and dancer.s")

Examples:

1. The choir sang a beautiful hymn.
2. The choir performed at the church service.
3. The choir was made up of children and adults.
4. The choir members were dressed in robes.
5. The choir was rehearsing for the Christmas concert.