Quote Originally Posted by beloitpiper View Post
http://en.wikipedia.org/wiki/Irish_w...ghland_Bagpipe

http://www.bagpipeworld.co.uk/Britis...les/BrBoru.htm

Basically, the difference is two drones instead of three. And if you're using the Brian Boru chanter which can have up to fourteen keys could be fitted making it fully chromatic from low E to high c#. The GHB have only 9 notes.
Thanks beloitpiper.