Presumably the Fusovite (demonyms are hard) witches have giant brass instruments protruding from either side of their head.
I don't care if I've made that joke already, the Japanese war tubas are adorably crap at what they do and I love them.
"She's old, she's lame, she's barren too, // "She's not worth feed or hay, // "But I'll give her this," - he blew smoke at me - // "She was something in her day." -- Garnet Rogers, Small Victory
FiMFiction.net: we might accept blatant porn involving the cast of My Little Pony but as God is my witness we have standards.
Of course, by the same token, this could imply that witches of certain other nationalities have large concrete bowls in place of horns. Maybe they just pass them off as weird helmets...