Philip Hayes (1738–1797) was a pioneer collector of the manuscripts of Henry Purcell, and his music library is a landmark of early musicology. Much less well known, however, are the six large scorebooks containing his own transcriptions of Restoration music, four now held at Tatton Park in Cheshire and the other two – almost entirely overlooked until now – at the Royal College of Music, London. From the basis of Hayes’s own scholarship, itself remarkable for its time, and of a fascinating trail ...