This was a popular misconception in Scotland because of a Salvation Army Band called The Joystrings who were appearing on nationwide TV at this time. It was easy to see why people got mixed up.
I worked with 3 versions of the band and sorting out who was in, where and when they played was confusing at the best of times. Over the 14 months two people were the driving forces behind the band: Robert Plant and Vernon Pereira, In fact it was Robert that came up with the name Band of Joy. This was the main inspiration for not only the name of the book, but what I would write about as it's something I have wanted to do for a long time.