John Harley has written extensively on musical topics since retiring from the civil service. His books for Ashgate include William Byrd: Gentleman of the Chapel Royal (1997), William Byrd’s Modal Practice (2005), The World of William Byrd: Musicians, Merchants and Magnates (2010), and, with Andrew Ashbee, The Cheque Books of the Chapel Royal (2 volumes, 2000).
"""This is a coherent and carefully-thought-out book (...) The new thoughts presented in these essays contribute to an ongoing discussion that has been gathering momentum for some years (...) Harley’s book is very welcome: any choir director planning to perform a work by Tallis should consult it."" - Richard Rastall, The Consort Early Music Journal, vol.73, Summer 2017"