The beat the song is built on is a 2-bar phrase, played through bars 13-16, 29-32 and 48-50, and 14 more places -- 18.8% 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 crash, hi-hat, snare, high tom, mid tom and kick, counted in thirty-second notes. On its own it scores 77 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 93 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 113 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 113, 136, 159, 182 and 205 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, hi-hat, snare, high tom, mid tom and kick, in 4/4 at 205 BPM, counted in thirty-second notes. It is written out above, and it covers 18.8% of the bars the kit plays.
Bars 13-16, 29-32, 48-50 and 54-56, and 13 more places. The time is kept on the toms to start with, and it changes 33 times over the song.
77 out of 100 on its own -- demanding. The song as a whole is 93 out of 100. Hard, and what makes it hard is how many notes a second it asks for.