Scott Walker

In the sixties, he was part of the celebrated pop group the Walker Brothers – known as America's Beatles – but he rebelled against stardom and fled to a monastery before going solo. Since then, 'pop's own Salinger' has retreated ever further from the mainstream with each album. Now, as Jarvis Cocker, Damon Albarn and others line up to perform his work in a series of concerts, he tells Sean O'Hagan, in a rare interview, why he's happy to be a loner