not sure, i usually stick to the norwigian sceene. id call it post black, maybe progressive. metal archives discribes it as Avant-Garde, Atmospheric Black (early).
its got clean vocals. sorta like primordial but less irish. vocals sound similar to maynard from tool, at least to a degree and with a more scandinavian tone.
vortex is in a few bands , dimmu being the major one, he has vocal parts on "maelstrom mephisto" and "the insight and the catharsis" while also playing bass. he also had a doom metal band called lamented souls, which had an illusive hard to find album, the origins of misery , i have a couple tracks and thats his best work in my opinion. if you like melodic vocals some keyboard/piano and of course hellhammer, i check it out. this album probibly could make it in the mainstream if the word spread though.
*edit*
been looking for a promo clip but cant seem to find one