While I've not yet seen the film, I am a fan of Alan Moore and David Lloyd's graphic novel V For Vendetta. I first read it back when it was serialized in Britain's Warrior magazine back in the 1980s, and then again when DC Comics re-released it. It's an interesting story, deeply layered, and which requires the reader's careful attention to detail.

During its initial run several bits of sheet music were included, with lyrics by Moore. David J, Bauhaus bassist and occasional collaborator with Moore, recorded and released some of these songs in 1985, on his album The Etiquette of Violence.

So since I highly doubt that it was used for the film, here's an MP3 of David J performing This Vicious Cabaret [3.1MB MP3]. Now I'm off to wrack my brain and try to remember who borrowed my copy of the graphic novel and my copies of Warrior.