Stian Aarstad
Stian Aarstad is a Norwegian pianist and keyboard player best known for his four-year ( 1993–1997 ) stint with the black metal band Dimmu Borgir during which he played keyboards and synthesizers while engendering criticism and controversy for appearing onstage and performing in a top-hat-and-cape outfit reminiscent of Jack the Ripper , while wearing minimal corpse makeup and not moving or showing any emotion . 
<triplet> Dimmu Borgir <subj> black metal <obj> genre