Chord & FretBossa nova · Guitar
Bossa nova (João Gilberto, 2-bar batida)
Sound summary
The Bossa nova pattern is a bass-and-chord figure for the guitar, in 2/4 straight (even subdivisions): it alternates thumb bass (B) and chord (A), one answering the other. To the ear: B — A — B A — A B — A — B A — —.
How to count it
There are 2 beats per bar (2/4), split into sixteenth-notes (four per beat). Count out loud: 1 e & a, 2 e & a. Keep the beat with your foot and follow the grid: each box is one subdivision.
The rhythm grid
B = bass (thumb) · A = chord block (i-m-a together, no sweep) · — = rest
The thumb bass and the i-m-a block follow the two-voice violão notation (Silva & Madeira 2021).
How to play it
Right hand
Bass and chord take turns: the bass (B) on the thumb first, then the chord (A) answering — always in that order, never colliding. The chord (A) is a finger block (i-m-a), not a sweep: the thumb never plays the bass strings along with it. On the rests, let the thumb and fingers settle on their next strings — ready, without cutting the sound early.
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 Am7
Take an Am7Am7Am7Am7: the bass (B) is the low E, and the Am7 chord (A) answers next. Play it slowly, following the diagram and the sound.
Common mistakes
- Gluing bass and chord to the same instant. The B has to come first and the A answer — if they land together, the bass-chord bounce vanishes.
- Running the subdivisions. The faster the pattern, the easier to push ahead — lock the tempo on the metronome before speeding up.
- Freezing the arm on a rest. It should keep going in the air, off the strings, and land on the next hit — the continuous motion is what holds the time.
Guided practice
- Bass alone. Play only the B hits (thumb), very slowly, feeling each one land in time.
- Isolate the chord. Drop the bass and play only the A hits, feeling where they answer.
- Put the hands together. Bass first, chord after — slowly, until the alternation is automatic.
- Take it up on the metronome. Start slow, keep the pattern clean, and add a few BPM at a time.
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 the bass and the chord sit apart in time — Chord & Fret runs that drill with an adjustable tempo.
Practice in Chord & Fret →Variations & related patterns
With the strum steady, take it to actual Bossa nova progressions: rhythm, chord changes and voice-leading in one exercise. That’s the Progressions by Rhythm feature in Chord & Fret.
Apply to progressions →Understanding the groove is the first step; the full practice — repetition, metronome, audio, progressions and review — happens in Chord & Fret. There this pattern stays saved in your study, to revisit later, play offline and track your progress.
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