Clave is the most important word in this whole track. It's a Spanish word for "key" — the rhythmic key that unlocks every Latin and Afro-Cuban style. The clave is a two-bar pattern of five notes spread across eight beats; once you hear it, you hear it everywhere — in salsa, mambo, songo, rumba, samba, even hip-hop and pop tunes that grew up on Latin radio.
Here is the most important thing to understand up front: the clave is not always played. It's felt. In a salsa band, a percussionist might tap it on a wood block, but the kit drummer often doesn't play the clave directly — they play around it, with every limb keyed to the clave's accents. The clave is the underlying pulse the entire ensemble agrees on. Once it locks, the music locks. Below we lay it out clearly: each clave hit is notated at its true note value (quarter or eighth), with rests sized to land the next hit exactly where it belongs. Read each bar by counting "1 — 2 & — 3 — 4" out loud and watching the hits drop into the right slots.
Son and Rumba
The two clave families used in Cuban music are son clave and rumba clave. Both are two-bar, five-note patterns. They differ by exactly one note: in son, the third hit of the 3-side is on beat 4; in rumba, that same hit is delayed by an 8th to land on the &-of-4. That single 8th-note displacement is the difference between salsa (son) and folkloric rumba.
Exercises
Cross-stick: stick laid across the snare, butt end clicking the rim — a click, not a crack. Loop the two bars as one phrase, counting out loud. The usual failure is rushing from bar 2 back to bar 1: the empty end of the 2-side is part of the cycle, not a gap to close.
Same five notes, 2-side first. If the band is in 2-3 and you play 3-2, the music sounds cruzado — crossed — so this direction has to be as natural as the other. Alternate four cycles of Exercise 1 with four cycles of this until neither feels like the inversion.
Compare to Exercise 1. Son's third hit was on beat 4; rumba's third hit slides one 8th later, to & of 4. The 2-side is identical. That single 8th-note displacement is the difference between salsa (son) and folkloric rumba (guaguancó, yambú, columbia). Play Exercise 1 once, then this one immediately after — your ear should hear rumba as more syncopated, more delayed, more African in feel.
Cross-stick holds son 3-2 while the feet stay square — kick on 1 and 3, hat-foot on 2 and 4. The hand must not bend the feet toward its syncopation. If the cross-stick starts dragging the feet around, drop to ♩=80 and rebuild the layers.
Same texture as Exercise 4 with the clave reversed. The feet do not change — that's the point. Quarters are quarters. The hand must know which side it's on and not be pulled around by the foot. Practise this for a minute, then immediately switch back to Exercise 4 (3-2) without stopping. Switching directions cleanly is the goal: the feet keep going, only the hand direction flips.