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Agogo
Agogos are signalled by alternately touching the thumb and first finger.
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Repenique
Repeniques are signalled by holding up one hand with forefinger and little finger extended.
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Shaker
Shakers are signalled using both hands to imitate holding the instrument.
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Snare
IMG/jpg/surdo.jpg
Surdos - all of them
Surdos are signaled by alternating fists, as if beating a drum above your head.
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Surdos - High
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Surdos - Low
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Surdos - Mid
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Tamborim
Tams are signalled by placing 2 fingers on the palm of the other hand.