The beat the song is built on is one bar, played through bars 41-48, 68-75 and 128-130, and 3 more places -- 19.7% 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, hi-hat, snare and kick, counted in thirty-second 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 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 100 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 100, 118, 136 and 154 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 4/4 at 154 BPM, counted in thirty-second notes. It is written out above, and it covers 19.7% of the bars the kit plays.
Bars 41-48, 68-75, 128-130 and 132-134, and 2 more places. The time is kept on the silence to start with, and it changes 11 times over the song.
67 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 many notes a second it asks for.