The beat the song is built on is a 2-bar phrase, played through bars 6-13, 18-25 and 34-41, and 1 more place -- 29.6% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on crash, hi-hat, snare and kick, counted in thirty-second notes. On its own it scores 51 out of 100 -- a step up -- and the thing that decides that is how fine the subdivision is.
The whole song is 64 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.
The room opens this beat on its simplest reduction, at 78 BPM, and adds the notes back a rung at a time -- 4 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 78, 92, 106 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 2-bar phrase 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 29.6% of the bars the kit plays.
Bars 6-13, 18-25, 34-41 and 99-106. The time is kept on the silence to start with, and it changes 7 times over the song.
51 out of 100 on its own -- a step up. The song as a whole is 64 out of 100, a step up from a first song, and the work is in how fine the subdivision is.