The beat the song is built on is one bar, played through bars 3-10, 27-36 and 41-48, and 1 more place -- 64.4% of every bar the kit plays. Learn that one and the song is very nearly finished.
It is played on hi-hat, snare, mid tom and kick, counted in thirty-second notes. On its own it scores 100 out of 100 -- hard -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 100 out of 100, so the beat is most of what the song asks for. Get it clean and the rest follows.
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 50 BPM -- and adds the notes back over 5 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 50, 60, 70, 80 and 90 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, mid tom and kick, in 4/4 at 90 BPM, counted in thirty-second notes. It is written out above, and it covers 64.4% of the bars the kit plays.
Bars 3-10, 27-36, 41-48 and 53-73. The time is kept on the silence to start with, and it changes 1 time over the song.
100 out of 100 on its own -- hard. The song as a whole is 100 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.