Re: JAMIE'S
"I would never!" Bad!Vax is maybe a little over-familiar like he's assuming the sister/brother thing is a little more developed than it really is, but otherwise he's doing a pretty decent job of pretending to be his less sinister counterpart who has absolutely no nefarious intentions whatsoever. (It's a lot harder than it should be.)
He's also going to move closer to the stage when she gets up there so he can cheer regardless of how it goes, but if she really is as poor a singer as she claims there's gonna be a liiiiiiittle bit of a cringe when she first starts.