Standing at the crossroads – the Mississippi crossroads of Robert Johnson and the devil's infamous meeting – Mark Radcliffe found himself facing his own personal crunch point. Aged sixty, he had just mourned the death of his father, only to be handed a diagnosis of mouth and throat cancer. This momentous time in his life, and being at the most famous junction in music history, led Radcliffe to think about the pivotal tracks in music and how the musicians who wrote and performed them – from...