The beat the song is built on is one bar, played through bars 34-40, 42-49 and 52-53, and 11 more places -- 18.6% 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, hi-hat, snare and kick, counted in thirty-second notes. On its own it scores 50 out of 100 -- a step up -- and the thing that decides that is how fine the subdivision is.
The whole song is 83 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 120 BPM -- and adds the notes back over 3 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 120, 140 and 160 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, hi-hat, snare and kick, in 4/4 at 160 BPM, counted in thirty-second notes. It is written out above, and it covers 18.6% of the bars the kit plays.
Bars 34-40, 42-49, 52-53 and 56-57, and 10 more places. The time is kept on the silence to start with, and it changes 38 times over the song.
50 out of 100 on its own -- a step up. The song as a whole is 83 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.