Hadow wrote and edited a number of publications on literature, music and music theory. He took on the general editorship of the original six-volume edition of the Oxford History of Music between 1901 and 1905, writing the fifth volume (covering the period from C.P.E.
Hadow's work encompassed literature, music, and music theory. He was responsible for editing the first six volumes of the Oxford History of Music, with his contribution being the fifth volume covering the period from C.P.E.