Apito de Embolo: This whistle has a plunger that regulates the internal air column, allowing the production of a characteristic ascending or descending sound.
It is used in creating effects, mainly in the replication of the call of some Amazonian birds.
Apito de Grilo: Created to imitate both the sound of crickets and some birds from the Amazon.
Apito de Mari: Created from a Mari's seed, a fruit found in the Northern region of Brazil. It is used in hunting (not sporting hunting) for communication between the natives so they don't scare off the hunt.
These small but powerful instrument are perfect to incorporate the Amazonian sound in your music.