Studio Diary Part 2

So i mean obviously if you record drums first you have to have everything planned exact, so does the drummer just have the song memorized in his head and play to a metronome? and just go from verse to chorus to any bridges or is does he listen through headphones to an already rough guitar track that was also metronomed? Answers?

I think they record demo-versions of the songs first.
"Daniel is playing better than ever despite his sickness and the new material is shining even more with real drums on the songs."
So they probably use a drumcomputer and play the guitars and vocals decently over that. Maybe Daniel listens to those demo guitar/vocal tracks while recording