A guajeo is a fixed repeating figure: which course sounds on which eighth note, rests included, one bar at a time. It is not a strum, because only one course sounds at once. It is not a solo, because it never develops — it repeats, and the band builds on the repetition. It is the layer a tres contributes to a son band, and it is the layer no other instrument in this network has, which is why it gets an engine rather than an essay.
The three cells
Every column below is derived: slot strings come from the pattern data (a · is a declared rest), and each page's pitch table is computed from the instrument's real open-course tuning plus the voicing under the hand.
| Cell | Slots | Strikes | Courses used |
|---|---|---|---|
| The son montuno cell | 3-·-1-2-1-·-2-1 | 6 | 3, 1, 2 |
| The guajira cell | 3-2-1-2-3-2-1-2 | 8 | 3, 2, 1 |
| The cha-cha-chá cell | 3-·-2-·-1-·-2-3 | 5 | 3, 2, 1 |
The rest rule
The rests are part of the pattern, not gaps in it. Each cell above declares its rests explicitly, and the engine treats a rest slot exactly like a strike slot — it has a position in the bar and the validator counts it. That is the honest difference between a guajeo and a picking pattern: a roll fills every eighth by definition, while a tres figure earns its push by leaving space in front of it.
Every cell is shown in one commonly taught one-bar form and looped. Guajeo playing genuinely varies between regions, bands, and decades; no page here claims a single canonical version exists — each says which form it is showing, and the arithmetic is done on that form.
Where to start
Learn the guajira cell first, even though the son montuno is the famous one: its unbroken eighths teach the evenness everything else depends on, with no rests to negotiate. Then the son montuno, whose two rests are where beginners rush. The cha-cha-chá cell comes last — it is mostly space, and space is only playable once your hand trusts the pulse. Run each one through the chord library and keep the metronome honest underneath you.