https://www.youtube.com/watch?v=N0WwATuADOwI posted this band before, but I've been obsessively watching the vocalist's one-take videoed vocal rerecordings of their songs. This one is one of the two best for really showing how upsettingly good he is. The other is Red Light for more clean vocals and unusual techniques not often heard in music (including the most terrifying literal fucking Muppet voice ever for the last bridge). Also it's just funny watching him freak the fuck out and emote.
And yes, you can be pretty certain that even the most absurdly close-to-the-actual-original-version ones are actually being redone in these videos. The one for Placenta has him use a prop on a chain, and you get to hear the clinking of the chain. In We, The Sad, he smacks the shit out of his own face (like I said, there's a lot of reasons to watch this shit), and that's quite audible as well. And in any of the videos, the volume of his voice changes when he moves too far from the microphone, or when he switches to a louder vocal technique without backing up first. Seriously amazing.
And yeah, I had to actually clarify that, because a couple of the videos made me sincerely wonder if the audio wasn't pieced together from studio takes. It's upsetting.
