Attar

Attar was an Ulla on the planet Xirranda who was a t-shirt salesman in the airport. When hearing about the Rain Of Terror he raced to his settlement to warn his tribe, but found no one. Using the correct environment, The Doctor dimmed the lights and started a drumming inside the train carriage. This helped Attar to remember back to the stories he'd been told as a child. His t-shirt designs were actually a map of the tunnels which led to the cavern containing the machine that would kill the creatures. He helped to restore the original version of the song of his Ulla people, so that they could reactivate the machine. (NSA: Rain Of Terror