"One more note: Don't confuse these songs with the "original music" that plays at that oh-so-fun curtain call and at the end of Act I. That's by Claire Van Kampen, who, like Mark Rylance, came from the UK -- specifically, she did a lot of work with mark at the Globe.
To get a copy of that, you'd probably have to email her directly. I don't think they're planning on marketing it."