An entire class of English vocal ensembles, sometimes placed under an "Oxbridge Sound" umbrella, specializes in early music. Among the prestigious ranks of the Gothic Voices, the Tallis Scholars, Pro Cantione Antiqua, the Oxford Camerata, and the Sixteen, longevity and musical versatility placed the Hilliard Ensemble in a class almost of their own. Named for the great Elizabethan miniaturist painter Nicholas Hilliard, the Hilliard Ensemble grew out of the musical vision of baritone Paul Hillier, a graduate of the Guildhall School of Music, and his friendships with three other ...