I've always liked Irish/Celtic music just fine, but never bought any. When I heard that this band had a big impact in reviving and developing the style, I decided to buy the album. I'm glad I did. There's a good variety on here, and they are all great musicians. The a cappella part in "Fionghuala" blows me away--I wonder how many takes they had to do before they got it down! The speed of the song, lilting rhythm, and almost electronic precision of their voices shattered my preconceptions of what is possible with a cappella.
Even so, "Fionghuala" isn't even my favorite song on the album (though it might be the most striking). It's just all so good. If you like folk, acoustic, or just want to hear what is possible when great musicians push the envelope, this is a good album.