"Have you ever considered changing your name to AAA Ulver, so you don't have to end up at the end of the Rock/Pop section in music stores and two feet away from the Adult Contemporary section?"
Do you really believe that Perdition City is the future sound of music, or is that meant to be sarcastic? On a serious note, be sure to inquire about his thoughts on his departure from Arcturus...
Bring up why he cut his hair, sold out, stopped making hypnoticlly beautiful black metal to make crap. Also ask him if he knows how cool he looked in the picture inside of Bergtatt where hes standing ontop of the Norwegian mountain range,w ith the wind blowing in his hair. Then promptly ask him if he knows how fat and stupid he looks now. Oh yeah, and tell him to grow his hair, run in the woods, act like a troll again, and give us another masterpiece in the vein of Bergtatt, Kvelesanger, and Nattens Madrigal.