When the lights go down in the theater in Somerville, you hear them faintly, as if arriving slowly from a far away village, singing a call and response to the measured beat of the drum. The entrance onstage by the Royal Drummers and Dancers of Burundi is almost ritualistic, a slow procession of high kick steps. The performers, traditionally clad in red, green, and white, balance heavy, waist-high log drums on their heads as they move methodically to form a ceremonial crescent of 10 drums.
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