Here's a Brazilian adaptation of our now-very familiar Afro 6/8 feel— or 12/8, in this case. The song is Negro, from the album Avanço by the Tamba Trio, with Hélcio Milito on drums.
A pianist I work with, Weber Iago, from Rio De Janeiro, tells me this style is not actually native to Brazilian music— there is not a major Brazilian equivalent of that Afro-Cuban triplet groove. The band here is copping a foreign style, either Afro-Cuban or African. Being a provincial, I always thought American musicians were somewhat unique in our eclecticism— our inauthenticity, if you want to be critical of it— but it's really a worldwide thing in commercial music.
Here's the whole intro, which is played twice:
After the intro, the band breaks into straight Bossa Nova, at a slightly faster tempo.
Audio after the break: