The orchestra is largely made up of members of the Lyric Opera of Chicago orchestra, and the baritone is John Orduña, who (among his other credentials) has sung with the Lyric Opera, performing a very nice rendition of Irving Berlin's "God Bless America." The conductor is Christopher Bell. Keep in mind that this is a rehearsal, so I think they stop a few times, but I've used the Pause button well-enough I think so that it should flow pretty well.