Ah, OK. Thanks for the clarification, Jack. I managed to find this part of the Tradfest website relating to the 7th May event also:

http://www.tracscotland.org/festivals/tradfest/events/2666/songs-and-stories-of-the-pavee-people-with-irish-traveller-thomas

Lots of other good things happening at Tradfest too, of course.