“Boo” samples a piece from Orson Welles' radio broadcast, THE WAR OF THE WORLDS. Which (according popular mythology) sparked actual panic in New Yorkers who didn’t realise that the program was merely a modernized adaptation of H.G . Welles' famous Novel War of the Worlds; even after Announcers stated “we are repeating the fact which was made clear four times on the program, that, while the names of some American cities were used, as in all novels and dramatizations, the entire story and all of its incidents were fictitious.” After the play Welles even assumes his role as host and tells listeners (at the insistence of CBS executives – as they became aware of panic inspired by the program) that the broadcast was a Halloween concoction: the equivalent, he says, “of dressing up in a sheet, jumping out of a bush and saying, ‘Boo!’” Which I can only assume was the quote that inspired the title of “Boo” for this chilling song.