The beat the song is built on is one bar, played through bars 37-39, 41-43 and 45-47, and 12 more places -- 18.5% 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 hi-hat, snare and kick, counted in sixteenth notes. On its own it scores 51 out of 100 -- a step up -- and the thing that decides that is how many notes a second it asks for.
The whole song is 72 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 64 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 64, 75, 87 and 98 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 hi-hat, snare and kick, in 4/4 at 98 BPM, counted in sixteenth notes. It is written out above, and it covers 18.5% of the bars the kit plays.
Bars 37-39, 41-43, 45-47 and 49-51, and 11 more places.
51 out of 100 on its own -- a step up. The song as a whole is 72 out of 100: demanding, mostly on how many notes a second it asks for.