Bamboo Castanets also referred to as Bamboo clappers are percussion instruments that produce a distinctive clicking sound when struck together. The sound produced by the bamboo castanets is achieved through percussive contact between the paired castanet-like structures on each piece. The use of castanets in music and dance can be traced back to ancient times. They were originally used in traditional Spanish flamenco music and dance, but their popularity has spread to other cultural traditions as well.