The beat the song is built on is one bar, played through bars 2-6, 22-28 and 32-36, and 12 more places -- 28.8% 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 sixteenth notes. On its own it scores 30 out of 100 -- a fair first song -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 67 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.
A part this hard is not learned by playing it slowly and hoping. The room opens it on its simplest reduction -- the timekeeper alone, at 96 BPM -- and adds the notes back over 3 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 96, 112 and 128 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 4/4 at 128 BPM, counted in sixteenth notes. It is written out above, and it covers 28.8% of the bars the kit plays.
Bars 2-6, 22-28, 32-36 and 38, and 11 more places. The time is kept on the kick and crashes to start with, and it changes 18 times over the song.
30 out of 100 on its own -- a fair first song. The song as a whole is 67 out of 100: demanding, mostly on the independence between the hands and the feet.