Apo rules, my wife and I got to hang out with them over about a week when they were touring So Cal and Nevada last year. I can tell you this, the guys are some of the most awesome and well educated people I've ever met! They were all classicaly trained cellists who turned to metal on cellos somewhat out of experimentation, and it took off from there!
If you like their music at all, check them out live when they come back out probably the end of next year! Seeing them live is an unexplainable phenomenom...I took a friend who didn't care all too much for their music, but ended up buying all of their CDs after the show, lol!
Also, check out some of their older music, originally composed by Eicca, and not just their covers. Songs like Romance, Pray!, and In Memoriam... these songs are more classical cello with a heavy twist and not so amplified like their current album.