The beat the song is built on is one bar, played through bars 12-21, 38-43 and 82, and 2 more places -- 27.4% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on crash, snare and kick, counted in thirty-second notes. On its own it scores 68 out of 100 -- demanding -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 61 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 77 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 77, 93, 109, 124 and 140 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, snare and kick, in 4/4 at 140 BPM, counted in thirty-second notes. It is written out above, and it covers 27.4% of the bars the kit plays.
Bars 12-21, 38-43, 82 and 86, and 1 more place. The time is kept on the toms to start with, and it changes 19 times over the song.
68 out of 100 on its own -- demanding. The song as a whole is 61 out of 100, a step up from a first song, and the work is in how fine the subdivision is.