The beat the song is built on is one bar, played through bars 26-32, 34-40 and 42-49, and 11 more places -- 23.4% 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, 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 85 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 116 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 116, 139, 163, 186 and 210 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, ride, snare and kick, in 4/4 at 210 BPM, counted in sixteenth notes. It is written out above, and it covers 23.4% of the bars the kit plays.
Bars 26-32, 34-40, 42-49 and 58-64, and 10 more places. The time is kept on the kick and crashes to start with, and it changes 16 times over the song.
72 out of 100 on its own -- demanding. The song as a whole is 85 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.