Son jarocho is the folk son of Veracruz on Mexico's Gulf coast, played at the fandango around a wooden platform (tarima) that the dancers drum with their heels. It is the home of the traditional "La Bamba".
How it sits: six eighths per bar in sesquialtera — bar 1 is heard in two (6/8), bar 2 in three (3/4). The jarana strum (guitar) says it plainly: long–short, long–short on C and F, then three even downstrokes on G7. The zapateado on the tarima follows the same switch — heel stamps (kick) on the two dotted quarters, then on the three quarters, with toe and shuffle strokes (rim) filling the eighths. The leona (bass), a deep four-string plucked with a horn pick, stays off the main beats and fills the holes the strum leaves.
Listen for bar 2 suddenly marching in three; that tilt is the son.
Practice: count 1-2-3-4-5-6, 1-2-3-4-5-6 and clap 1, 4 then 1, 3, 5.