The reco-reco, also called the raspador, caracaxá, ganzá or querequexé in Brazil, is a generic term for idiophones whose sound is produced by scraping.
It arrived in Brazil with the Bantu Africans, but it is not solely used in black music. It can easily be found in a number of formats and materials in the musical traditions of Europe, Latin America and North America (for example, the washboard, or frottoir, found in the music of Louisiana).
Reco-recos can be made of metal, wood, or a large bamboo bud sliced crossways and then scraped with a drumstick; this version is most common in Latin music, and is called the guiro.
The Brazilian reco-reco is used quite often in samba and pagode groups, as well as samba-enredo school parades; this version is a metal box with two or three steel springs stretched over the top. A metal stick is rubbed against it, allowing the player to let the springs continue vibrating, or dampen them by covering the box with his or her hand.
In traditional African music, the wooden or bamboo reco-reco is still used, such as is the case with capoeira, candomblé, samba de roda, or as a pau de madeira in moçambiques and congadas, or a ganzá in siriri.