If you fall asleep at the theatre, it's usually a sign that it's a boring experience that's not worth your time. However, there's a new twist; the Barbican in London has designed the perfect show to send you off into a nice, deep sleep. A production titled Lullaby has been specially-created to send its audience to sleep, showcasing a wide array of relaxing performance arts, from carefully-selected storytelling to – rather surprisingly - singing octopuses. So far, no-one has lasted until the end of the show without slipping into slumber. The audience lie in beds around a central stage to attend this sleepover in their pyjamas, waiting to be sent to sleep by the show. After watching the play to the best of their abilities and falling asleep, the audience are left to their own devices before being woken up at 7:30am the next day and served breakfast. The show's producer, Simon Casson, says he had the idea after falling victim to fatigue at shows such as Oliver and Lord of the Rings; as a debt of gratitude, he envisaged his grand masterpiece currently showcasing in the capital.