The beat the song is built on is one bar, played through bars 20, 22 and 30-31, and 3 more places -- 27.6% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on floor tom and kick, counted in sixteenth notes. On its own it scores 21 out of 100 -- straightforward -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 39 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 65 BPM, and adds the notes back a rung at a time -- 3 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 65, 75 and 86 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 floor tom and kick, in 4/4 at 86 BPM, counted in sixteenth notes. It is written out above, and it covers 27.6% of the bars the kit plays.
Bars 20, 22, 30-31 and 35-36, and 2 more places. The time is kept on the silence to start with, and it changes 14 times over the song.
21 out of 100 on its own -- straightforward. The song as a whole is 39 out of 100 -- a fair first song -- with the independence between the hands and the feet the part that decides it.