The beat the song is built on is a 2-bar phrase, played through bars 42-44, 46-48 and 50-52, and 9 more places -- 18.4% 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 and kick, counted in sixteenth notes. On its own it scores 72 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 83 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 91 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 91, 109, 128, 146 and 165 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 and kick, in 4/4 at 165 BPM, counted in sixteenth notes. It is written out above, and it covers 18.4% of the bars the kit plays.
Bars 42-44, 46-48, 50-52 and 54-55, and 8 more places. The time is kept on the silence to start with, and it changes 18 times over the song.
72 out of 100 on its own -- demanding. The song as a whole is 83 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.