Spells: Bard song Kelin's Lucid Lullaby resists seem f'ed up

[Deverell]

I'd been noticing extreme resist rates against blue mobs while leveling in dungeons, but for a while I attributed it to them probably having been buffed with magic resist by nearby caster mobs. Then I was helping some low-level dude who was fighting the froglok guards outside Guk, and when I tried to mez them, I got the same resist rate (I'd estimate it to be somewhere between 30% and 50%) as on content my own level. Suspicious, I went and pulled some level 1 mobs and sure enough the song was resisted at about a rate of 30-50% on them as well. Is this intended? I'm level 34 and have 121 charisma, not that it should matter really. It seemed to make no difference whether or not I equipped a stringed instrument.