15 bars at 170 BPM -- fast, and 0:21 of it without a break -- on hi-hat, snare and kick.
The beat the song is built on is one bar, played through bars 1-15 -- 100% of every bar the kit plays. Learn that one and the song is very nearly finished.
15 bars: 15 keep time. The longest unbroken stretch of time is bars 1-15.
170 BPM, in 4/4, with the time kept in sixteenth notes. At that speed the sixteenth notes are the whole difficulty, so the room will take it down to a quarter of it and climb back.
51 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 38 out of 100; the rest of the number is everything around it.
15 bars, about 0:21 at the written tempo. The course breaks it into 3 exercises over 2 sittings, about 16 minutes each.
hi-hat, snare and kick. Three pieces and no more -- this one is playable on almost anything with a kick, a snare and something to keep time on.