Mick - Our band did an Irish mass a few years ago. We used a medley of Irish waltzes for the processional (Fanny Power, Planxty Irwin, a couple others I forget) "Give Me Your Hand" as the Offertory, "Be Thou My Vision" as a meditation [in gaelic to avoid the martial (as opposed to marital) imagery], and for an upbeat recessional we did two reels - Woman of the House and Man of the House. It was quite a sight seeing the bride and groom skipping down the aisle! Have fun!