Her voice isn't that bad, tbh (?). I think the problem is in the mic.
According to the materials books put out Liz has an angelic singing voice... but she's so bad at the technical aspects of singing that she ruins it.
It's to contrast with her 'rival' Nero, who is technically proficient at singing, but has a catastrophically bad singing voice.
there you go, a grailSo even a grail can't improve that, eh...
I don't mind too much, but still...Elizabeth, I'll be counting on you from now on as well!My, fawn, you truly know your stuff!Well then, I'll give you a taste of my grail-leveled singing voice!STOP THAT SINGING RIGHT NOW OR I'LL STOP IT WITH CANNON FIRE!Come on, put the lights on me!