This exemplary new edition of the vocal score of an enchanting operetta---which has delighted audiences for over a century with its catchy melodies, its witty lyrics, and its madcap tale of tender-hearted pirates, timid policemen, and the demands of duty---was prepared by musicologists Carl Simpson and Ephraim Hammett Jones, who returned to original manuscripts and early sources to produce handsome, newly engraved plates closest to Gilbert and Sullivan's original intentions. All of the voice parts appear here, in addition to a piano reduction of the full score and the complete libretto.