'Filosofem' is the only failure in Varg's career. I like ambient music and black metal music very much, but can't stand mixing them. And why do that while being able to make awesome raw and extreme music? I don't want to accuse Varg of selling out (it would be rather impossible for someone making hateful music and even not promoting it) but it's not a good experiment. It isn't as bad as later days Summoning but it has nothing to do with early Burzum. Ofcourse some black metal parts sound as angry as always but it's still not the same thing as before.