Well worth reading that article in Jack's link. I went to the concert in November's Carrying Stream Festival, entitled "From Thurso to Berwick - a Celebration of Morris Blythman" which was both enlightening and entertaining. The concert is being repeated during this year's Edinburgh Tradfest, on Friday 5th May at the Scottish Storytelling Centre on Edinburgh's Royal Mile. Billed as a "Rebel Ceilidh Come All Ye".
More details in the Tradfest brochure (p18) or on the website:
Tradfest brochure