Guitarist Graham Coxon wrote the music with producer Stephen Street. He recalled to NME: "It started off as a really bleak dirge, with those little ding-ding-ding bells and what sounds like a train pulling away. It's got that massive chorus now, but when Steve and I were working on it – there was no chorus in place, no vocal, so I came up with one to fill the gap."
"Later, when Damon came back, he'd written one of his own – his was better, of course, but you can still hear mine at the end, overlapping with his. It's actually a very simple song, but it sounds epic – when Damon hits at high note in the chorus, it's one of those big moments."