I don't know. I'm not sure if I've ever heard anything by World Serpent and only dimly remember one Unto Ashes song.
I guess the dead giveaway that something is "Pagan Music" is if the act in question has at least one or more songs per album praising the merits of Paganism or the old gods.
And the dead of something being full-blown "Witch Music" is if the songs just sounds like elaborate prayer sessions (to a Pagan Deity) set to music (example: "Wytches Chant '98" by Inkubus Sukkubus) or any song that sounds like instructions on how to gather the right herbs and roots for spellwork (example: "Belladonna and Aconite" by, surprise surprise... Inkubus Sukkubus.)
― Lord Custos Epsilon (Lord Custos Epsilon), Tuesday, 1 February 2005 17:31 (twenty-one years ago)