One of their chief instruments is the 'Marimba' or 'Tyanbilo,' a form of harmonium.
This form of Marimba is also met with amongst the natives of Costa Rica.
The Marimba is played with drum-sticks of rubber, and the tone is good and powerful.
The Portuguese have imitated the marimba, and use it in their dances in Angola.
Others assert that the Indians have known the marimba time out of mind, and undoubtedly invented it.
The Smithsonian Institution contains a good specimen of the Marimba.