Goblet-shaped drums are part of the classification of membranophones that are directly struck. They may either be single or double-headed.
In Mindanao, single-head goblet-shaped drums are primarily found among the Islamic groups such as the Maranaw with their ornately carved dabakan that form part of the kulintang ensemble.
The membrane is fastened on the head with a cloth-covered woven rattan rope that is wound around it. Sometimes, the head is also fastened with nails with the rattan rope providing additional tension.
Maranaw -“dabakan, dadabuan”