The beat the song is built on is one bar, played through bars 10-11, 14-15 and 29-30, and 4 more places -- 26% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on hi-hat, snare and kick, counted in thirty-second notes. On its own it scores 69 out of 100 -- demanding -- and the thing that decides that is the speed of the hand keeping time.
The whole song is 60 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 61 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 61, 73, 85, 98 and 110 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 hi-hat, snare and kick, in 6/4 at 110 BPM, counted in thirty-second notes. It is written out above, and it covers 26% of the bars the kit plays.
Bars 10-11, 14-15, 29-30 and 33-34, and 3 more places. The time is kept on the silence to start with, and it changes 8 times over the song.
69 out of 100 on its own -- demanding. The song as a whole is 60 out of 100, a step up from a first song, and the work is in how much of it falls off the beat.