Bossa nova comping, the basic model — Valerio's "Comping Model #1", a ii–V–I moved from Eb to F. The left hand (and the bass) plays half notes, root then fifth, like the surdo drum; the right hand plays rootless voicings in the bossa clave rhythm: bar 1 on 1, the and-of-2 and 4; bar 2 on 2 and the and-of-3. Levine (fig. 21-7) calls this the Brazilian two-bar clave and notes that, unlike salsa, Brazilian players treat it freely — his fig. 21-8 to 21-11 are variations of the same idea.
Listen for the long first chord of each odd bar and the way the even bar answers off the beat; keep the right hand light and the left hand dead steady.
Practice: play just the left-hand half notes with the clave layer, then add one right-hand chord at a time: 1, then the and-of-2, then 4, then the second bar. Swap in the bossa guitar pattern to hear the same rhythm fingerpicked.