Theory
Here's this week's second sound, the pop. If the thumb is the kick drum, the pop is the snare — you pluck the string with a finger for a sharp "snap!" Its direction is the opposite of the thumb. Where the thumb "strikes" the string, the pop pulls the string up and lets go so it slaps back against the fretboard. That's why the pop is a much brighter, popping sound than the thumb, making the springy accent that's so typical of funk.
Here's the motion. Hook the first joint of your index or middle finger lightly under a high string. From there, pull the finger up and snap it off so the string flies up and smacks the fretboard for a "snap!" Today's target is the thinnest string, open G (1st string). It's thin, so the pop catches most easily and sounds the brightest.
The key is direction, not force. Pull sideways and you only hurt your finger while the sound goes dull. What matters is the trajectory of the finger going from under the string upward, snapping it up. At first your fingertip may sting and the sound may be weak — once a callus forms, a crisp "snap" comes fast, so don't worry. Not hard, but precise is today's motto. You can pop with either the index or the middle finger — start with whichever is comfortable, and once the sound settles, alternate the two if you like.
Since the pop is a high string, the hand position is exactly the same on a 5-string as on a 4-string. It has no direct link to the low B, but keep up yesterday's muting habit — resting the thumb over the lower strings stops other strings from ringing along as you pop.
See it
Today you see three examples. First check the spot where the pop hooks on the fretboard, then pop open G in quarters and eighths. Each example comes in both a 4-string and a 5-string version. On the score, P means pop (plucking with a finger).
First, the pop spot map. The blue dot is open G (1st string) — hook a finger under this string and snap it up.
▶ 4-string. The blue dot is open G (1st string). Hook your index or middle finger under this string and snap it up.
▶ 5-string. The G (1st string) spot is the same as on a 4-string. The pop is a high string with no bearing on the low B, but rest the thumb over the lower strings out of habit.
Example 1 — pop quarters. Pop open G once per beat. Focus only on whether the "snap" is clear.
▶ BPM 60, 4-string. One pop (P) per beat. Check that all four "snaps" are clear and equal in size.
▶ BPM 60, 5-string. Same note and position as the 4-string. Rest the thumb over the lower strings so nothing rings along with the pop.
Example 2 — pop eighths. Split each beat in two, eight times. Even faster, only push to the point where your finger doesn't hurt.
▶ BPM 65, 4-string. Twice per beat. Even faster, watch that the "snap" tone doesn't smear and your finger isn't strained.
▶ BPM 65, 5-string. Same notes as the 4-string. Here too, rest the thumb over the lower strings to stop sympathetic ringing.
Today's practice
0–10 min · Warm-up Loosen your right hand with yesterday's thumb/ghost. For now, releasing the tension in hand and arm comes before the pop.
10–20 min · Brain training Hook a finger under open G and pop very slowly. Focus only on the direction — the trajectory of snapping the string up.
20–40 min · Real play Repeat Example 1 (pop quarters) at BPM 60 → once the "snap" is clear, move to Example 2 (pop eighths) at BPM 65. If your finger hurts, stop and rest a moment.
40–50 min · Record/feedback Record 30 seconds and listen for whether the "snap" is clear and even in size. Note the BPM you reached today.
Done when: you can pop open G at 60–65 for a clear, even "snap" without hurting your hand.
- Pulling sideways. Dragging the string sideways only hurts your hand while the sound goes dull. Snap it up, from under the string.
- Hooking too deep. Hook only the first joint so it releases smoothly. Hook too deep and the string won't let go.
- Too hard. Yanking hard tears your fingertip quickly. The trajectory, not the force, makes the "snap."
- Sympathetic ringing. If the lower strings ring while you pop, rest the thumb over them to deaden them.