The roda is the center of Capoeira. To get a picture of a roda, imagine a spirited fight in a high school hallway or right in the middle of the street. Immediately, the crowd forms a circle around the combatants, shoulder to shoulder, shouting energy into the middle to keep the fight interesting. A Capoeira roda has that circle of people, that environment. At the head of the roda is the bateria, the row of instruments that govern the players and direct the members of the circle. Each instrument in the bateria takes its place in a strict hierarchy, with the berimbau as the master.
Every rhythm the berimbau plays means something to the roda. The circled people clap in time with it; the faster the rhythm, the faster and more energetic the players must be within the circle, and the game is bigger and flashier. A slow rhythm means a slow, clever game full of tricks. Each instrument improvises upon the theme of the berimbau and supports it. One person in the roda, often the master of the roda who plays the berimbau, leads the songs. A solo called a ladainha precedes the game, followed by call-and-response songs of all natures, and each one means something. The leader sings each verse, and the entire roda echoes back the chorus. There are songs to exhort the players to play more energetically, to show off their best moves, to tone down the violence, to tone up the violence, to honor famous Capoeiras, or simply to revel in some aspect of the culture. The game obeys the berimbau and songs and is created by the players.
The social expectations of each roda vary by the group of people.
Some use shoes, some don't, some have specific traditions for beginning a game or entering the roda.
In general, a game is begun with the instruments starting in the order of their hierarchy, first the lead berimbau, then the others, then the atabaque, then the pandeiro, then the agogo.
The ladainha (which literally means litany) is sung, and then the circle begins clapping with the instruments.
Two players crouch at the foot of the berimbau, holding hands; one always enters the roda by paying respects to the berimbau.
When the first chorus is reached, the two players enter the roda, often with some variation of an aú.
As their game progresses, another player from the roda may circle round to pay their respects to the berimbau, find an opening, and buy the game with the player who has been in the longest.
The game continues in a flow of new Capoeiras until the berimbau signals the end.
The players in the roda shake hands—without ever taking their eyes off each other, lest there be a final trick—and exit the roda.