Twelfth Night is one of the most popular of Shakespeare's plays in the modern theatre, and this edition places particular emphasis on its theatrical qualities throughout. Peopled with lovers misled either by disguises or their own natures, it combines lyrical melancholy with broad comedy. The introduction analyses its many views of love and the juxtaposition of joy and melancholy, while the detailed commentary pays particular attention to its linguistic subtleties. Music is particularly important in Twelfth Night, and this is the only modern edition to offer material for all the music required in a performance. James Walker has re-edited the existing music from the original sources, and where noe exists has composed settings compatible with the surviving originals.