'I thought: opera, how hard can it be? Songs. Pretty girls dancing. Nice scenery. Lots of people handing over cash. Got to be better than the cut-throat world of yoghurt, I thought. Now ever where I go there's... ' Death, to be precise. And plenty of it. In unpleasant variations. This isn't real life - it's worse. This is the Opera House, Ankh-Morpork... a huge, rambling building, where innocent young sopranos are lured to their destiny by a strangely-familiar evil mastermind in a mask and evening dress, with a penchant for lurking in shadows, occasional murder, and sending little notes full of maniacal laughter and exclamation marks. Opera can do that to a man. But Granny Weatherwax, Discworld's most famous witch, is in the audience. And she doesn't hold with that sort of thing. So there's going to be trouble (but nevertheless eveningsvenin's entertainment with murders you can really hum... ). And the show MUST go on.