In H. G. Wells's 1898 novel The War of the Worlds, the invading Martians utter the mournful cry Ulla, a sound that became one of the story's most recognisable signatures. Jeff Wayne's musical version brought that cry to a wider audience with a deep, echoing vocal effect that fans still associate with the towering tripods and their doomed invasion. The sadder, slower variation is now shared online by fans and editors who want that same alien atmosphere without the full force of the original battle cry.