Tumpong
The tumpong (also inci among the Maranao) is a type of Philippine bamboo flute used by the Maguindanaon, half the size of the largest bamboo flute, the palendag. A lip-valley flute like the palendag, the tumpong makes a sound when players blow through a bamboo reed placed on top of the instrument and the air stream produced is passed over an airhole atop the instrument.