Gavin Harrison
Porcupine Tree · Rhythmic illusion and groove displacement
The fills Gavin Harrison actually uses across their path, moves and song studies — each one opens the same exercise workout the rest of the app links to.
Linear Fills (Kick–Hand–Hand)
Level 4Fills · 55–140 BPM
A repeating group of three: kick, then hand, then hand. Because a bar of 16ths is 16 notes and the group is 3 notes long, the pattern shifts every bar — which is why it sounds clever.
Goal: Modern linear fill vocabulary
WorkoutWritten Fill Repetition
Level 3Fills · 55–150 BPM
Composed fills are written once and played the same way every night. This is the opposite of improvising: you decide the notes once and then repeat them exactly.
Goal: Repeatable, song-worthy fills
Workout