The beat the song is built on is one bar, played through bars 52-54, 56-57 and 82-83, and 9 more places -- 20.8% 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 hi-hat, snare, kick and hi-hat foot, counted in sixteenth notes. On its own it scores 67 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 98 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 98, 115, 133 and 150 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 hi-hat, snare, kick and hi-hat foot, in 4/4 at 150 BPM, counted in sixteenth notes. It is written out above, and it covers 20.8% of the bars the kit plays.
Bars 52-54, 56-57, 82-83 and 85-86, and 8 more places. The time is kept on the hi-hat to start with, and it changes 3 times over the song.
67 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.