Sapos consisting of a gourd with openings and a balloon inside. When the balloon is rubbed, it replicates the sound produced by frogs.
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Sapo Cururú is an sculpture made by hand by the natives with a noble Amazon wood. With the stick it replicates the sound of frogs from an specific region in the forest.
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Prerecas Verdes is an instrument made of Maárup wood and coconuts, has that name since it reproduces the characteristic sound of frogs.