You can listen to the full soundtrack at the link. Unfortunately, the play is no longer showing, but the music is beautiful and worth a listen.
Just as an aside, I pulled this up while editing, which means it plays over the crazy-expensive Genelec system. It interests me that the best production values and attention to detail I hear on music these days is all on bluegrass. Makes me want to listen to more bluegrass.
The Punch Brothers are pretty good. I think I once heard a thing with Yo-Yo Ma when he said the people whom he knew who had the best rhythmic accuracy were all bluegrass players. He should know.
That whole album is pretty legit (though as usual with an Edgar Meyer album, there are one or two duds). Every guy on it is also top notch. Chris Thile and Edgar Meyer are both MacArthur Grant recipients.