My guest this week is John Wirtz. John, along with his partner Moira, runs Sore Fingers, a UK bluegrass and old time music camp that celebrates it's 30th anniversary this year. John joins me to chat about how the camp started up and how it's grown over the years to play a major role in the UK and European bluegrass scenes. We talk about some of the extraordinary tutors who have travelled across the Atlantic to teach at Sore Fingers over the years and how they've helped thousands of people dev...