Music is a fundamental part of Capoeira and is what helps make it unique. The musical side of Capoeira involves the playing of traditional instuments, such as the Berimbau, the Atabaque and the Pandeiro. As well as the playing of instruments, traditional brazilian songs are sang. The combination of music and song is what helps to create the Axé (energy) needed for the Roda. The speed and character of the jogo (game) are generally determined by the many different rhythms of the berimbau (Music >> instruments >> berimbau), a one-string musical bow, which is considered to be the primary symbol of this art form. The berimbau is complemented by the pandeiro (tambourine), atabaque (single-headed standing drum)and the agogo (double bell). Inspiring solos and collective singing in a call-and-response dialogue join the hypnotic percussion to complete the musical ambience for the capoeira session