The beat the song is built on is one bar, played through bars 26-30, 32 and 34 -- 17.5% 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 81 out of 100 -- hard -- and the thing that decides that is how much of it falls off the beat.
The whole song is 80 out of 100, so the beat is most of what the song asks for. Get it clean and the rest follows.
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 66 BPM -- and adds the notes back over 5 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 66, 80, 93, 107 and 120 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 120 BPM, counted in thirty-second notes. It is written out above, and it covers 17.5% of the bars the kit plays.
Bars 26-30, 32 and 34. The time is kept on the hi-hat to start with, and it changes 5 times over the song.
81 out of 100 on its own -- hard. The song as a whole is 80 out of 100. Hard, and what makes it hard is how much of it falls off the beat.