Twilight: The Musical - Reasked

Okay, let's go a bit weird & have some fun with this question/idea.

Let's say Stephenie Meyer allowed Twilight to be turned into a musical (just like Sister Act, The Lion King & Wicked) and you had to write the songs, what would the title of songs be and who would you have sing them?

(I think most of us would want to see StarKid [aka the guys behind a Very Potter Musical] to rewrite the lyrics to Katy Perry's "I Kissed A Girl"... Yes? No?)