The beat the song is built on is one bar, played through bars 26-32, 42-49 and 86-92, and 1 more place -- 25.5% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on crash, hi-hat, snare and kick, counted in thirty-second notes. On its own it scores 74 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 90 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.
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 53 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 53, 64, 74, 85 and 96 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 crash, hi-hat, snare and kick, in 3/4 at 96 BPM, counted in thirty-second notes. It is written out above, and it covers 25.5% of the bars the kit plays.
Bars 26-32, 42-49, 86-92 and 110-124. The time is kept on the toms to start with, and it changes 13 times over the song.
74 out of 100 on its own -- demanding. The song as a whole is 90 out of 100. Hard, and what makes it hard is how much of it falls off the beat.