We all know that ‘They fuck you up your mum and dad’, but nowhere is this more reliably (and violently) true than in the opera house. If you have the misfortune to be born into an operatic family you can expect to be murdered by your own mother (Médée, Lucrezia Borgia), killed by your grandmother (Jenufa), or even bumped off by a hitman hired by your father (Rigoletto).