Damon Albarn is standing in the doorway of Abbey Road's canteen, deep in conversation with The Libertines' Carl Barat. Nearby, Pulp are queueing for a fresh batch of lasagne. Around them, half a dozen of children are running around, filming everything on handheld cameras. All of them are excitedly awaiting the arrival of Olivia Rodrigo. These were the scenes in London last November, as some of the world's biggest stars convened to record a new charity album in aid of Warchild. The tracklist,