55 bars, 3:23, at 65 BPM: slow enough that every note is exposed. Snare, floor tom, kick and hi-hat foot and nothing else.
The beat the song is built on is a 2-bar phrase, played through bars 1-3 and 5-54 -- 96.4% of every bar the kit plays. Learn that one and the song is very nearly finished.
55 bars: 54 keep time and 1 is a fill. The longest unbroken stretch of time is bars 1-54.
65 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.
45 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.
55 bars, about 3:23 at the written tempo. The course breaks it into 3 exercises over 2 sittings, about 16 minutes each.
snare, floor tom, kick and hi-hat foot. Nothing in the part asks for anything else.