Mustis is a norwegian black metal keyboard player. His music is inspired mainly by Wagner and Dvorak. He can play also other instruments like the violin, the drums, the guitar and so on...from 1998 to 2009 he has been part of Dimmu Borgir. He wrote most of their music, and we can appreciate his talent in songs such as "Fear and Wonder" or "Progenies of the Great Apocalypse". He's one of the best keyboard players ever, difficult to imitate or manage to be better than him. His style is absolutely inimitable and...inexpressible.
Well, you cannot help admitting that he's such an eye candy, but most of the merit goes to his masterpieces.
to notice Mustis' talent, as written before, try to listen to "Fear and Wonder" or other of his masterpieces