Music is a central to Shakespeare's romances. In Pericles, Gower calls the story a "song," and Marina "sings like one immortal." Cymbeline has the beautiful songs "Hark, hark! the lark " and " Fear no more the heat o'th' sun," and The Winter's Tale has Autolycus's songs and a pastoral dance. The Tempest was turned into an opera less than a hundred years after it was written; composers who have written for it include Purcell, Berlioz, Tchaikovsky, and Vaughan Williams.
Eliot Goldenthal's music is one of the highlights of Julie Taymor's 2010 film, which ends with the epilogue being sung rather than spoken. During a question-and-answer period at the New York Film Festival, Taymor explained that she thought a spoken epilogue wouldn't work in film as it does in the theater, where the actor sheds his character as he bids the audience farewell.
Bryce Dallas Howard does just this in Kenneth Branagh's As You Like It (2006), and it's an effective strategy. But Taymor didn't want to break the illusion of the world of her film and so didn't film Helen Mirren speaking the epilogue. Instead she had Goldenthal write music to be sung by Beth Gibbons of the trip-hop band Portishead. The music plays as we watch Prospero's sinking books and the credits roll.
Here it is, though not—alas—Taymor's imagery. Below the video, I've printed the epilogue with the words missing from Goldenthal and Taymor's version in italics.
Now my charms are all o'erthrown,
And what strength I have's mine own,
Which is most faint. Now 'tis true
I must be here confined by you
Or sent to Naples. Let me not,
Since I have my dukedom got
And pardoned the deceiver, dwell
In this bare island by your spell;
But release me from my bands
With the help of your good hands.
Gentle breath of yours my sails
Must fill, or else my project fails,
Which was to please. Now I want
Spirits to enforce, art to enchant;
And my ending is despair
Unless I be relieved by prayer,
Which pierces so that it assaults
Mercy itself and frees all faults.
As you from crimes would pardoned be,
Let your indulgence set me free.