Da'uli-da'uli, a kind of xylophone from Nias, Indonesia (also found in Madagascar), consists of three or four loose pieces of resonating wood, sometimes flat but often with a rounded cross section. These can rest across the legs of a seated player, or across a hole in the ground; sometimes they are laid top of a wooden box. You strike them with wooden mallets. Among their many performance contexts are festivals surrounding rice harvests; on these occasions, they are usually played by women.
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More information on: Xylophone