Kate & Leopold Soundtrack: What's the Name of this Waltz?

[titanicpiano14]

At the very end of the movie, Kate & Leopold, there's a waltz. It only lasts like 10-15 sec max. Is it by the film's composer Rolfe Kent or a traditional waltz? (I've played an extension the ending waltz, click below)

http://www.youtube.com/watch?v=14EOatPaH94