81 bars, 4:16, at 72 BPM: slow enough that every note is exposed. Crash, hi-hat, snare, high tom, mid tom, floor tom and kick and nothing else.
The beat the song is built on is one bar, played through bars 26-33, 50-56 and 58-65 -- 34.8% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
81 bars across 11 sections: 57 keep time, 3 are stops and 15 are silent. The longest unbroken stretch of time is bars 50-65.
72 BPM, in 4/4, with the time kept in sixteenth notes. Slow enough to hear every mistake, which is why the room lets you sit at the written tempo rather than under it.
48 out of 100, a step up from a first song, and the work is in the independence between the hands and the feet. The beat itself is 32 out of 100; the rest of the number is everything around it.
81 bars, about 4:16 at the written tempo. The course breaks it into 15 exercises over 4 sittings, about 25 minutes each.
crash, hi-hat, snare, high tom, mid tom, floor tom and kick. That is most of a full kit; the part moves around it rather than sitting in one place.