Chord & FretRock-and-roll · Electric guitar
Bo Diddley beat (3-2 clave on guitar)
Sound summary
Rock-and-roll is played with a chord strum — 4/4, straight (even subdivisions) — for the electric guitar: the hand strums the chord (A) down and up. It sounds like this: A↓ A↑ A↓ A↑ A↓ A↑ A↓ A↑ A↓ A↑ A↓ A↑ A↓ A↑ A↓ A↑.
How to count it
There are 4 beats per bar (4/4), split into sixteenth-notes (four per beat). Say the beats: 1 e & a, 2 e & a, 3 e & a, 4 e & a. Tap your foot on the strong beat and read the grid above: each cell is one subdivision.
The rhythm grid
A = chord · ↓ down-stroke · ↑ up-stroke
The ↓/↑ direction follows the bowed-string arcada convention (ᴨ down, V up; Ribeiro 2017).
How to play it
Right hand
The hand strums the whole chord (A). The arm swings down (↓) and up (↑) in constant motion — the up-stroke catches the treble strings and is naturally lighter.
Left hand
Keep the chord well pressed through the whole pattern — the left hand rules pitch, the right rules the bar. Only release the shape at the end of the bar, moving the hand ahead to the next one.
Example in E
Grab an E and play the full strum over it: each stroke is the same chord. To carry it into any song, change only the shape in the left hand — the right hand’s rhythm doesn’t change. Listen below.
Common mistakes
- Up-strokes as hard as down-strokes. The up-stroke (↑) is lighter and catches only the treble strings — equal force thickens and drags it.
- Rushing. Fast subdivisions are easy to run. Start slow with the metronome and only speed up once the pattern is clean.
- Letting the tempo drift. Without a firm pulse the strum leaks — count along and hold the same time from the first bar to the last.
Guided practice
- Down-strokes only. Strum the chord on every down-stroke (↓), no up-stroke yet.
- Add the up-stroke. Let the arm come back (↑) between hits — lighter, catching the treble strings.
- Close with the metronome. Go slow first and raise the BPM only once the pattern comes out clean.
You’ve got the theory; now the time has to enter the body. Play along with the audio, follow the count and raise the metronome bit by bit until every stroke lands in its place without rushing — Chord & Fret runs that drill with an adjustable tempo.
Practice in Chord & Fret →Variations & related patterns
With the strum steady, take it to actual Rock-and-roll progressions: rhythm, chord changes and voice-leading in one exercise. That’s the Progressions by Rhythm feature in Chord & Fret.
Apply to progressions →The page explains; the real practice — repeating, timing on the metronome, listening, applying to progressions and reviewing — is in Chord & Fret. Save this pattern in your study to pick it up later, play offline and watch your progress.
Open the trainer →