Apparently there is a songbook out from Mary McLaughlin, likely now out of print. Have you asked about or searched for that?

"Mary Mc Laughlin (the singer) has just finished a new songbook, organized along the same lines as her popular "Singing In Irish Gaelic." This new book, entitled "A Gaelic Christmas Songbook," is intended as a companion to her "Gaelic Christmas" music CD, which was released at this time last year.

What's particularly cool about this book (in my not-so-humble opinion) is that I'm the editor. :D I should mention, however, that I do not benefit financially from the sale of the book, so this isn't a "buy my product" post. I just think it's something some people here might enjoy. I also think it's a nice resource for Irish learners (and I know there are some of you out there!), as I found that "Singing in Irish Gaelic" is what helped me begin to get a handle on Irish phonics!

The book, with its accompanying pronunciation CD, teaches you to sing 12 Christmas carols in Irish. The songs are graded from easiest to most difficult (both musically and linguistically). For each song there is a "text page;" which includes the actual Irish text, a phonetic rendering, and a loose translation; and a "music page," which includes the sheet music for the first verse (and chorus, where applicable) of the song." Redwolf chiffandfipple