I was just going to add that Denis Hempson was a contemporary of OCarolan, and was the oldest player (97)at the Belfast Harp festival of 1792 at which 10 harpers played. He lived to be 112 and so lived in 3 centuries (1695-1807)! At one point he played for Bonnie Prince Charlie. Accordingly, he was a wonderful resource for information about changing harp and music styles- Hempson played with his fingernails. Edward Bunting interviewed him several times and writes about him in chapter 5 of "Ancient Music of Ireland" entitled "Anecdotes of the more distinguished Harpers of the last two centuries" which folks might enjoy. Dover has reprinted this
ISBN 0-486-41376-4
Bunting also describes at length the particular pieces, the style and even the dress of the players