The beat the song is built on is one bar, played through bars 3-5, 7-9 and 11-13, and 1 more place -- 20.3% 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 ride, snare and kick, counted in thirty-second notes. On its own it scores 48 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 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 125 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 125, 146 and 167 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 ride, snare and kick, in 4/4 at 167 BPM, counted in thirty-second notes. It is written out above, and it covers 20.3% of the bars the kit plays.
Bars 3-5, 7-9, 11-13 and 15-17.
48 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.