 David Russell Hulme, editor of the Oxford University Press 2000 scholarly edition of the score, has attributed the cuts and other changes to the music principally to Harry Norris, musical director of the D'Oyly Carte at the time of the Glasgow revival, and the modifications to the opera's orchestration, as well as the new overture, to Geoffrey Toye.He concluded that some lesser changes may have been made by Malcolm Sargent, but in a few cases Hulme was uncertain as to which conductor was responsible for which change.The most conspicuous changes were as follows