chorale (n.) Look up chorale at Dictionary.com
1828, "sacred choral song," from German Choral "metrical hymn in Reformed church," shortened from Choralgesang "choral song," translating Medieval Latin cantus choralis, from Latin cantus (see chant (v.)) + choralis "belonging to a chorus or choir" (see choral). The -e was added to indicate stress. Meaning "group of singers" is 1942.