Bill Bailey is the absolute master of making music the butt of his jokes, rather than mere packaging for mediocre ones. TV theme tunes, heavy metal, techno, trip-hop, even doorbells and sirens: everything gets its tricks and absurdities exposed. When he isn't playing music (which is most of the time in this show), he likes to do something very similar with jokes, parodying comedic structures and techniques themselves. You can see this in his undying obsession with three-men-in-a-pub gags. What you always get from Bailey, in other words, is something silly, nerdish, funny and interesting, even when it doesn't have a tune.