The beat the song is built on is one bar, played through bars 14-15, 17-22 and 24-27 -- 27.9% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on ride, snare and kick, counted in thirty-second notes. On its own it scores 71 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 57 out of 100, so the beat is most of what the song asks for. Get it clean and the rest follows.
The room opens this beat on its simplest reduction, at 88 BPM, and adds the notes back a rung at a time -- 5 of them. Nothing is a matter of opinion: each rung has a tempo to reach and a gate to pass before the next one.
Tempo goes 88, 106, 124, 142 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 ride, snare and kick, in 8/4 at 160 BPM, counted in thirty-second notes. It is written out above, and it covers 27.9% of the bars the kit plays.
Bars 14-15, 17-22 and 24-27. The time is kept on the silence to start with, and it changes 4 times over the song.
71 out of 100 on its own -- demanding. The song as a whole is 57 out of 100, a step up from a first song, and the work is in how much of it falls off the beat.