I've always felt like Ulver's music (I know nothing after "Nattens Madrigal" though) was much more conceptual and arty than the other black metal bands' music from the same location and time. No satanism, no corpsepaints, no kvlt label, no stupid production (except for "Nattens Madrigal", which is why the band is revered in BM circles I think, but ultimately, it's much more thought out than a Gorgoroth album, if I may say so), nothing that'd make them stand out besides incredibble musicianship and talent in songwriting. That's a shame.