Zamba — the slow, courtly handkerchief dance of north-west Argentina, the lyrical sibling of the chacarera (not the Brazilian samba). Same 6/8, same sesquialtera — two dotted-quarter beats against three quarters — but at about two-thirds the speed, so the cross-rhythm is felt as a gentle sway. Quarter-note tempo 84 is a dotted-quarter beat of 56.
How it sits: the guitar rasguido puts the thumb bass on 1 and lets it ring, then up – chasquido (the muted, slapped stroke, x) on the second dotted-quarter beat – up – down. The bombo legüero gives the skin (kick) on both dotted-quarter beats, heavier on 1, and the wooden hoop (rim) on the second and third quarters, so the drum states both meters at once. A minor, i – iv – V7 – i over four bars.
Listen for the chasquido and the second bombo stroke coinciding: that is the 6/8 beat 2, while the rim and the upstrokes keep implying 3/4.
Practice: foot on the bombo skin, hand on the chasquido, then add the rasguido around them.