What is a "chorale" in the context of choral music?

A "chorale" refers specifically to a type of hymn tune that is traditionally set in four-part harmony. This structure typically includes soprano, alto, tenor, and bass parts, which are designed to be sung together, creating a rich harmonic texture. Chorales often have a straightforward and memorable melody, making them conducive to congregational singing in religious settings.

Music labeled as a chorale often originates from the Protestant Reformation, particularly associated with composers like Johann Sebastian Bach, who integrated chorales into his works. The purpose of a chorale is not only to facilitate worship but also to allow for expressive singing and musical participation by the congregation. This contrasts significantly with the other options, which do not align with the choral music definition.