Dynamics — bring the groove to life with loud and soft

Day three. Yesterday you made space with stop-time, right? Today you learn dynamics, that is, loud and soft. If you only hit hard, even the best rhythm sounds flat. Groove breathes only when there's dynamics. The very same A7 comp becomes a completely different feel depending on where you hit hard and where you hit soft. Think of a person's voice. Nobody speaks at exactly the same volume all the time. Important words get emphasis, throwaway words stay soft — the guitar's dynamics work exactly like this speech intonation. The moment dynamics come in, your playing starts to speak.

The core dynamic in blues is the backbeat. In 4/4, you hit beats 2 and 4 a touch harder. When you stomp 1·2·3·4 with your foot, put the weight on 2 and 4. This is the secret of the groove that makes your body sway on its own. On the other beats, ease off and let them flow softly.

The method is simple. To hit hard, move your wrist big; to hit soft, move it small. You're only changing the depth at which the pick brushes the strings. Add dynamics on top of yesterday's stop-time, and a flat boogie turns into a living groove. Today's goal is to make the difference between loud and soft audible to the ear. At first it's fine to exaggerate that difference a bit. Open it up wide and you can naturally narrow it later.

First, let's play A7 evenly across four beats with no dynamics.

▶ BPM 80, shuffle. Hit all four beats at the same strength. Feel this "flatness" first — you'll add dynamics soon.

Now let's put the weight on beats 2 and 4. Strum eight times, but use a big wrist only on beats 2 and 4. Let the rest flow softly.

▶ BPM 80, shuffle. Beats 2 and 4 hard (down), the rest soft. Alternate down-up strums and put the weight on the backbeat.

Once dynamics come in, even the same chord gives a feel that makes your body sway on its own.

0–10 min · Warm-up BPM 65. Alternate A7 hit once hard, once soft. Check the difference in the two volumes with your ears.

Now add yesterday's color and do a dynamics comp with A9.

▶ BPM 80, shuffle. Hit A9 hard on beats 2 and 4, soft on the rest. The color of the 9th and the dynamics come alive together.

10–20 min · Brain training (today's target = weighting the backbeat) With no sound, move only your wrist and practice hard-soft-hard-soft in an exaggerated way.

20–40 min · Real dynamics comp (BPM 80) Repeat the example above without a break, and listen for whether beats 2 and 4 clearly stand out.

40–50 min · Recording / self-feedback (recommended) Record one bar of dynamics comp: can you hear loud and soft as distinct.

Today's completion criteria: In an A7 or A9 comp, you can hit beats 2 and 4 hard and the rest soft, playing one bar where the dynamics are clearly audible.

Here are the mistakes that come up when you add dynamics. Soft is not "not playing."

▶ Soft, but still clear. When soft, it's fine to lightly brush just the lower three strings. Even if the sound is small, the notes must stay alive.

• Soft vanishes. If you ease off too much, no sound comes out at all. Play it small but audible.
• Hard gets rough. Slamming down to hit hard makes the pitch wobble. Use a big, smooth wrist.
• Dynamics flip. Hitting beats 1 and 3 hard makes the groove feel off. Put the weight on beats 2 and 4.
• Tempo drifts. It's easy to speed up when hitting hard. Even as the dynamics change, stomp your foot steadily.