To be sincere: if I don't read the lyrics (and I didn't in this case), I hardly understand content enough to know what they are talking about
I think they are good, even before listening them in the concert, altough it's the kind of music I can enjoy for some time, and then it bores me. I arrived when they were finishing their concert (3 songs left, I think), but I liked them a lot more than Grave Digger...
Grave Digger... I had to dowload some music prior the concert, as I had nothing of them: I like their albums, but no one makes me feel anything special. And, on stage, definitively not good.
Luckily, Therion is much better than the two previous bands... in album and, even more, in life!