No truth is more self-evident than that there are those whose best emerges only when they are paired with others: Lennon and McCartney, Morecambe and Wise, Clough and Taylor. And it’s perhaps even harder for a behind-the-scenes collaborator to step out in their own right.

Jack Antonoff, for example, is one of the creative powerhouses of modern pop: he co-writes and produces songs for Taylor Swift, Lana Del Rey and Lorde, who plainly regard him as intrinsic to their success.