Yes, it must be
Which CD did you listen to? Their first one (Xmas Eve and Other Stories) is their best (IMHO). Beethovan's Last Night is very good too (has nothing to do with Xmas, but they've played songs from it the last two years I've been there - complete with pyrotechnics). There's some good songs from the other albums, but not quite as good as their original.
You should check 'em out! Nobody I know who's been to their show has regretted it. In fact, a couple of years ago we brought my wife's parents (in their 50s) and her grandmother (in her 80s) and they all loved it as well. (I was a bit concerned with her grandmother, since the concert was a lot heavier than I thought it was going to be. After the show, we met up at home and her grandma said, "That was the best show I've seen in a LONG time! The only thing I didn't like were some of the slower songs, they were too quiet. But the loud ones were AWESOME!" Go Grandma!!!
CW