The drum beat in Autopsy

The beat the song is built on is a 2-bar phrase, played through bars 2-5, 18-21 and 34-37, and 3 more places -- 18.3% of every bar the kit plays. This one moves around more than most: the beat is where to start, not the whole job.

It is played on crash, hi-hat, snare and kick, counted in thirty-second notes. On its own it scores 85 out of 100 -- hard -- and the thing that decides that is how many notes a second it asks for.

The whole song is 99 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.

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 121 BPM -- and adds the notes back over 5 rungs, each with a tempo to reach and a gate to pass before the next.

1. Skeleton. Only the notes that land on a beat. The point is to feel where this bar stands.
2. Kick and snare, whole. The feet and the snare exactly as written, hi-hat pulled back to quarter notes. This is the part to know by heart.
3. Every note, flat. All the notes, but the hi-hat stays closed and nothing is ghosted or accented.
4. As written. Open hi-hat, ghost notes, accents and the crash where they belong.

Tempo goes 121, 146, 171, 195 and 220 BPM, and the gate at each one is 8 loops in a row with no wrong note and no wobble in the time.