The beat the song is built on is one bar, played through bars 18-26, 29-30 and 33, and 9 more places -- 34.5% 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, kick and hi-hat foot, counted in sixteenth notes. On its own it scores 53 out of 100 -- a step up -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 73 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 75 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 75, 88, 102 and 115 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, kick and hi-hat foot, in 4/4 at 115 BPM, counted in sixteenth notes. It is written out above, and it covers 34.5% of the bars the kit plays.
Bars 18-26, 29-30, 33 and 35-37, and 8 more places. The time is kept on the silence to start with, and it changes 1 time over the song.
53 out of 100 on its own -- a step up. The song as a whole is 73 out of 100: demanding, mostly on the independence between the hands and the feet.