Jack Ashworth, Professor of Music History Emeritus, continues to teach early music ensembles, harpsichord and organ on a part-time basis at the University of Louisville, to which faculty he was appointed in 1977. Primarily a harpsichordist, he also plays early string and wind instruments such as the recorder and viola da gamba. Active as an early music workshop coach in the United States, England, Canada and Australia, he received the Thomas Binkley Award for Outstanding Achievement by a Collegium Director in 1999 and served two terms as president of the Viola da Gamba Society of America. Jack has performed with Wieland Kuijken, Margriet Tindemans, Brent Wissick, Clea Galhano and Marion Verbruggen, as well as the ensembles Fretwork and Trio Settecento, among others. Publications include the article on "Keyboard Instruments" in A Performer's Guide to Renaissance Music (2nd ed; Indiana University Press, 2007) as well as articles (co-authored with Paul O'Dette) on basso continuo in both this volume and the companion A Performer's Guide to Seventeenth-Century Music (2nd ed; Indiana University Press, 2012). Running the Numbers, a handbook on continuo realization for keyboard players he co-authored with Frances Fitch, was published by Loux Music in 2011. Active as a substitute organist in the Louisville area, Jack also plays fiddle in the Buzzard Rock String Band.