We were talking about Bertolt Brecht and The Threepenny Opera in Potter's Avatars today, so I thought it the professorially responsible thing to do to show the students this.
For some reason, it never seems to swing like this in any actual productions of Threepenny.
I'm not sure by which I've done them the bigger favor, introducing them to Brecht or introducing them to Bobby Darin.
I'm kidding. I know.