Having spent five years in a Zen Buddhist monastery, Leonard Cohen should be well versed in the Buddhist teaching of non-attachment. Tonight, on the first of a four-night run at Manchester’s Opera House, the elder statesman of song certainly carries himself with the sort of grace that a spell away from the rat race often bestows. He beams with pleasure at the repeated ovations and cracks jokes when you least expect him to. One minute he is the Dalai Lama of Dour. The next he’s listing half-a-dozen pharmaceuticals he’s taken since his last live outing in 1993, when he was ‘just a 60-year-old kid with a crazy dream’.