*perk* Maire Brennan? EXCELLENT! Of course, I have a genetic predisposition to enjoy anyone who can sing in Gaelic :-). Also look ye into Iona; they're one of my alltime favorite bands. Uillean pipes and electric guitars - how can you go wrong? :-)
Their singer, Joanne Hogg (MD, if you can believe it :-) ) did a collection of hymns with Maire Brennan and (my favorite female vocalist and extremely short person) Maggie Becker.