The beat the song is built on is a 2-bar phrase, played through bars 19-20, 24-26 and 29-30, and 3 more places -- 18.1% of every bar the kit plays. This one moves around more than most: the beat is where to start, not the whole job.
It is played on crash, ride, hi-hat, snare, floor tom and kick, counted in thirty-second notes. On its own it scores 68 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 67 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 108 BPM -- and adds the notes back over 4 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 108, 127, 147 and 166 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 2-bar phrase on crash, ride, hi-hat, snare, floor tom and kick, in 4/4 at 166 BPM, counted in thirty-second notes. It is written out above, and it covers 18.1% of the bars the kit plays.
Bars 19-20, 24-26, 29-30 and 61-62, and 2 more places. The time is kept on the kick and crashes to start with, and it changes 8 times over the song.
68 out of 100 on its own -- demanding. The song as a whole is 67 out of 100: demanding, mostly on the independence between the hands and the feet.