Carl Dreyer’s 1928 silent movie masterpiece has had many musical accompaniments, from its original score by Victor Alix and Leo Pouget to Nick Cave and Johann Sebastian Bach. Now comes the superb Orlando Consort, the early-music British quartet, singing Guillaume Dufay’s chanson with lyrics by Christine de Pizan, whose poem about Joan of Arc (1412-1431) dates to 1429. Like the voices counseling the French saint, it is a cappella—without musical accompaniment.