Twelfth Night is one of the most popular of Shakespeares plays in performance, and this edition emphasizes its theatrical qualities in both the introduction and the full and detailed commentary. Where the original music has not survived, James Walker has composed settings compatible with the surviving originals, freshly edited, so that this edition, uniquely, offers all the music required to perform the play. Sir Toby Belch and his companion outwit the pretentious Malvolio, who despite suffering their most outrageous and insulting practical jokes, emerges as an almost noble figure.