Antoinette McKenna (who is Mary Bergin's sister) makes a lovely job of Fill, fill a rún ó, with voice and harp. It's on The Best Of Joe & Antoinette McKenna which you can take a look at (among other places) on Amazon

http://www.amazon.com/Best-Joe-Antoinette-McKenna/dp/B000000E5Q/ref=sr_1_1?ie=UTF8&s=music&qid=1235523361&sr=1-1

If you're going to buy it, remember to click on the blue catfish-jumping-out-of-a-banjo logo at the top of the main page, then scroll down and click the US or UK Amazon link, and help support Mudcat. (Canadian & French ones take you to the US site but you can get there by then going to the bottom of their page and clicking the relevant country, which I think still gets Mudcat their cut.)

Joe & Antoinette are great, both musically and as people. This is a lovely album, full of terrific material.