Maracatu de nação (also known as maracatu de baque virado: “maracatu of the turned-around beat”) is an Afro-Brazilian performance genre. The term, often shortened simply to nação (“nation”), refers not only to the performance, but to the performing groups themselves.
The musical ensemble consists of alfaia (a large wooden rope-tuned drum), gonguê (a metal cowbell), tarol (a shallow snare drum), caixa-de-guerra (another type of snare drum), agbê (a gourd shaker enveloped in beads), and mineiro (a metal cylindrical shaker filled with metal shot or small dried seeds). Song form is call and response between a solo singer and (usually) a female chorus.
– Wikipedia
AloJapan.com