2 fills to learn, played 7 times across 80 bars. Two fills that share a rhythm and differ only in how they are spread round the toms are one fill here, learned once and orchestrated twice.
On crash, ride, snare and kick. 22 out of 100 -- straightforward -- and what decides that is how many notes a second it asks for. In the song it lands on bar 15. The exercise loops the figure on its own first, and the one after it puts it back: one bar of rest to count yourself in, the figure, then the landing with the time still running. Getting out of a fill is the half most people never practise.
On snare and kick. 29 out of 100 -- a fair first song -- and what decides that is how much of it falls off the beat.
A fill is rhythm before it is orchestration. The room plays the whole figure on the snare first, puts the feet under it second, and moves it round the toms last -- looped on its own, round and round, until the hands know it. Then it puts the fill back where it lives: a bar of rest to count in, the figure, and the downbeat it lands on, because landing square is the other half of the job.
PRACTISE THESE FILLS →2 distinct fills, played 7 times: bars 13-14, 39-40, 63-64 and 80.
The one at bar 13, at 29 out of 100. 80 bars of 4/4 at 121 BPM, about 2:39 of playing, on crash, ride, hi-hat, snare and kick.