The beat the song is built on is one bar, played through bars 29-37, 59-67 and 104-119 -- 29.3% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on hi-hat, snare and kick, counted in thirty-second notes. On its own it scores 57 out of 100 -- a step up -- and the thing that decides that is how fine the subdivision is.
The whole song is 78 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 hi-hat, snare and kick, in 4/4 at 90 BPM, counted in thirty-second notes. It is written out above, and it covers 29.3% of the bars the kit plays.
Bars 29-37, 59-67 and 104-119. The time is kept on the silence to start with, and it changes 3 times over the song.
57 out of 100 on its own -- a step up. The song as a whole is 78 out of 100: demanding, mostly on how much of it falls off the beat.