The beat the song is built on is one bar, played through bars 121-135 and 137-151 -- 17.6% 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 and kick, counted in thirty-second notes. On its own it scores 69 out of 100 -- demanding -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 71 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 64 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 64, 75, 87 and 98 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 and kick, in 5/4 at 98 BPM, counted in thirty-second notes. It is written out above, and it covers 17.6% of the bars the kit plays.
Bars 121-135 and 137-151. The time is kept on the silence to start with, and it changes 14 times over the song.
69 out of 100 on its own -- demanding. The song as a whole is 71 out of 100: demanding, mostly on how much of it falls off the beat.