Ross W. Duffin is the Fynette H. Kulas Professor of Music at Case Western Reserve University where he directs the undergraduate and graduate programs in early music. His most recent book, How Equal Temperament Ruined Harmony (And Why You Should Care), was published by W. W. Norton in 2006, and his edition of the theoretical works of Thomas Ravenscroft was published by Ashgate in 2014. He lectures widely on tuning and on Shakespeare, and he is currently preparing a follow-up to Shakespeare’s Songbook (2004). He has also taught and lectured at summer early music workshops in Toronto, Vancouver, Amherst, Washington DC, Oberlin, San Francisco, and Los Angeles. Duffin is known for his many years (1981–98) as the lively, informative host and producer of Micrologus: Exploring the World of Early Music, on National Public Radio. A native of London, Canada, he received his bachelor’s degree from the University of Western Ontario and both his master’s degree and DMA from Stanford University.