We are fortunate to have major works for choir and harp. Most of them require previous study to be ready for performance.
While everyone may be familiar with Britten’s Ceremony of Carols, other works with studying ahead include
Four Songs by Johannes Brahms for choir, horn and harp
Choral music by Gustav Holst (more than one work)
Wonder Tidings by John LaMontaine, and Service of Lessons and Carols
Concerto de Navidad by Paul Czonka (sic)
Dancing Day by John Rutter
Carols by Stephen Paulus
Otcenas by Janacek
Dream of Gerontius by Edward Elgar
among others