The beat the song is built on is one bar, played through bars 84-106, 124-146 and 148-150, and 1 more place -- 27.3% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on snare, high tom, mid tom, floor tom and kick, counted in thirty-second notes. On its own it scores 78 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 81 out of 100, so the beat is most of what the song asks for. Get it clean and the rest follows.
A part this hard is not learned by playing it slowly and hoping. The room opens it on its simplest reduction -- the timekeeper alone, at 67 BPM -- and adds the notes back over 5 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 67, 81, 95, 108 and 122 BPM, and the gate at each one is 8 loops in a row with no wrong note and no wobble in the time.
PRACTISE THIS BEAT →A one-bar groove on snare, high tom, mid tom, floor tom and kick, in 3/4 at 122 BPM, counted in thirty-second notes. It is written out above, and it covers 27.3% of the bars the kit plays.
Bars 84-106, 124-146, 148-150 and 187-190. The time is kept on the silence to start with, and it changes 10 times over the song.
78 out of 100 on its own -- demanding. The song as a whole is 81 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.