I've had Steafan Hannigan play assorted pipes (Uillean, Scottish small, Northumbrian and Highland) and various chanters on all my albums. We have also done some live acoustic gigs together from time to time and it's hard work to sing with any of the small pipes when there's no p.a.! However it's worth remembering that the Highland pipes were considered a weapon of war for a good reason, and played inside they're not a very sociable way to treat an audience.
I remember one recording session using the Highland pipes when the recording engineer and I took refuge under the recording desk ....but oh, what a glorious sound to work with when we were mixing!

Anne