Jeff Wayne released his Musical Version of The War of the Worlds in 1978, adapting H. G. Wells' 1898 novel about a Martian invasion of England. In the story Ulla is the haunting call of the Martians and their machines, woven through the rock and orchestral score as a recurring motif of danger. The album became hugely popular in Britain and has been reissued, remixed, toured live and adapted for the stage over decades. That lasting fame keeps the Ulla call familiar online, where sci-fi fans reuse it for invasion memes and tributes.