Sonny and Brownie famously didn't get on when they were off stage. An old mate of mine saw them when they appeared at a folk club in Blackburn in the 1960s. There was a party after the gig - which Brownie went to, playing into the early hours of the morning and enjoying the best part of a bottle of brandy - a party which my friend attended after walking Sonny back to his hotel when the gig had finished.

I think it can sometimes be difficult, when you've been playing the same stuff with the same partner for many, many years, to stay fresh and focused and up for it - particularly when your audiences expect the same repertoire year in, year out.