The tumpong is a type of Philippine bamboo flute

Flute

The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening...

 used by the Maguindanao

Maguindanao

Maguindanao is a province of the Philippines located in the Autonomous Region in Muslim Mindanao . Its capital is Shariff Aguak. It borders Lanao del Sur to the north, Cotabato to the east, and Sultan Kudarat to the south....

n, half the size of the largest bamboo flute

Flute

The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening...

, the palendag

Palendag

The palendag, also called Pulalu , Palandag , Pulala and Lumundeg is a type of Philippine bamboo flute, the largest one used by the Maguindanaon, a smaller type of this instrument is called the Hulakteb ....

. A lip-valley flute

Flute

The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening...

 like the palendag

Palendag

The palendag, also called Pulalu , Palandag , Pulala and Lumundeg is a type of Philippine bamboo flute, the largest one used by the Maguindanaon, a smaller type of this instrument is called the Hulakteb ....

, the tumpong makes a sound when players blow through İNCİ GELDİ a bamboo reed placed on top of the instrument and the air stream produced is passed over an airhole atop the instrument. This masculine instrument is usually played during family gatherings in the evening and is presently the most common flute

Flute

The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening...

 played by the Maguindanao

Maguindanao

Maguindanao is a province of the Philippines located in the Autonomous Region in Muslim Mindanao . Its capital is Shariff Aguak. It borders Lanao del Sur to the north, Cotabato to the east, and Sultan Kudarat to the south....

n.