Kerry McCarthy, "Byrd" (Oxford, 2013). Musical biography of William Byrd by Duke University professor of music, Kerry McCarthy. Byrd was a Catholic composer who was at home in Elizabethan court circles as in recusant Catholic circles. Especially intriguing are McCarthy's discussions of the Masses for 3, 4, and 5 voices and the Gradualia. Byrd composed music with great depth, and paid great care to detail.