Ross Duffin is Fynette H. Kulas Professor of Music and Distinguished University Professor Emeritus at Case Western Reserve University in Cleveland. A native of London, Ontario, he received his graduate degrees from Stanford University where, as an advisee of William Mahrt, he specialized in the performance practice of early music. He came to Case Western Reserve in 1978 to direct the nationally recognized historical performance practice program, and retired from that position in 2018.

Among the general public of a certain age, Duffin is perhaps best known as the long-time host and producer of Micrologus: Exploring the World of Early Music (NPR, 1980–1998). His scholarly publications include: an edition of DuFay chansons (Ogni Sorte, 1983) which won the Noah Greenberg Award from the American Musicological Society, an edition of Josquin motets (Oxford, 1998), A Performer’s Guide to Medieval Music (Indiana, 2000), Richard Davy: St. Matthew Passion (A-R Editions, 2011), Cantiones Sacrae: Madrigalian Motets from Jacobean England (A-R Editions, 2005), The Music Treatises of Thomas Ravenscroft (Ashgate, 2014), Shakespeare’s Songbook (Norton, 2004) which won the inaugural Claude V. Palisca Award from the AMS, and Some Other Note: The Lost Songs of English Renaissance Comedy (Oxford, 2018). His book, How Equal Temperament Ruined Harmony (and why you should care) (Norton, 2007) continues to make waves in music circles worldwide, with a Chinese translation appearing in 2019.

Besides overseeing the historical performance program at CWRU, Duffin sang with the small chorus attached to Apollo’s Fire from its inception in 1992, and was founding artistic director of Quire Cleveland, a professional early music choir established in Cleveland in 2008.