The beat the song is built on is one bar, played through bars 78-80, 82-84 and 86-88, and 9 more places -- 24.8% 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, snare and kick, counted in thirty-second notes. On its own it scores 53 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 59 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 59, 69, 80 and 90 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, snare and kick, in 4/4 at 90 BPM, counted in thirty-second notes. It is written out above, and it covers 24.8% of the bars the kit plays.
Bars 78-80, 82-84, 86-88 and 90-92, and 8 more places. The time is kept on the kick and crashes to start with, and it changes 14 times over the song.
53 out of 100 on its own -- a step up. The song as a whole is 72 out of 100: demanding, mostly on how much of it falls off the beat.