Purity · Slipknot

90 bars of 4/4 at a walking 84 BPM, 4:17 of playing, on crash, ride, hi-hat, snare, high tom, mid tom, floor tom and kick.

78 out of 100: demanding, mostly on the independence between the hands and the feet.

TEMPO

84 BPM

TIME

4/4

BARS

90

LENGTH

4:17

DIFFICULTY

78/100

snare through bars 1-4, hi-hat through bars 5-20, ride through bars 21-32, snare through bars 33-36, ride through bars 37-44 and snare through bars 45-48, and 7 more changes after that.

The beat the song is built on is one bar, played through bars 21-23, 25-31 and 37-43 -- 18.9% of every bar the kit plays. This one moves around more than most: the beat is where to start, not the whole job.

    21
    1...............2...............3...............4...............
CC |X---------------------------------------X-----------------------|
RD |---------------x--------x---------------------------------------|
SD |----xx-xxx-x----xx-xx---------------------------x---------------|
BD |x-x---------xx-------x-xx---x-----------------------------------|

8 fills to learn, played 16 times: bars 2, 4, 12, 32, 34, 36 and 10 more.

It cuts the song into 41 exercises -- the grooves, the fills, and the joins between sections, which is where players actually come off -- and puts them in the order a teacher would. Each one opens on a reduction you can already play and adds the notes back a rung at a time, with a tempo to reach and a gate to pass before the next.

1. The grooves the song is built on -- H -- 1 exercise, about 15 minutes.
2. The grooves the song is built on -- A -- 6 exercises, about 37 minutes.
3. The grooves the song is built on -- K -- 3 exercises, about 25 minutes.
4. Through the Chorus and Part E -- 4 exercises, about 28 minutes.
5. Bars 9-36 -- 7 exercises, about 34 minutes.
6. Bars 33-49 -- 3 exercises, about 15 minutes.
7. Through the Chorus 3 and Part K -- 2 exercises, about 22 minutes.
8. Through Part K and Part M -- 3 exercises, about 29 minutes.
9. and 5 more sittings after that.