The 21st Annual Dunbar Traditional Music Festival (East Lothian, Scotland) will be from 25/9/2009 to 27/9/2009:

Dunbar Traditional Music Festival 2009

(This is the first time they've produced any information at all about what's on - well done).

Dunbar is on the main east coast railway line, has a good bus service from Edinburgh and has a number of caravan parks and campsites in the vicinity.