Bolero — the slow Cuban ballad. Its signature rhythm is the cinquillo (Scivales Ex. 4): five strokes in a bar, quarter–eighth–quarter–eighth–quarter, "x . x x . x x .". The bongó's martillo and the rhythm guitar both outline it; here the piano's right hand and the guitar play it on every bar while the bass holds roots and fifths in half notes.
How it sits on the clave: the cinquillo contains the whole three side (1, and-of-2 and 4 are all in it), so it reinforces the clave on the three-side bar and simply keeps time on the two side. Boleros are found in both directions; 3-2 is shown.
Listen for the weight: the first note of each bar is long and warm, the two eighths are the lift. Keep the guitar strums soft and let the bass carry the harmony; at 92 bpm a bolero should never sound busy.
Practice: clap the cinquillo against the clave layer alone until you can hear the two as one sentence, then play the chords. The voicings and bass line are standard practice (Gm | Cm D7); only the rhythm is transcribed.