Type: Membranophones > Drums > Hourglass.
Hornbostel-Sachs No#: 211.3
Region: South East Asia.
Description: An hourglass shaped drum found in the northern region of Malaysia, East Sumatra and Riau Islands in Indonesia. The gedumbak is found in two sizes the first being the anak “child” and ibu “mother drum”. The height of the ibu or mother drum can range from base up to head 45 cm. In the Riau province, Indonesia and the east coast of Northern Sumatra; the drum is called gedombak.
Playing Technique: The drum is played while resting across left thigh. This allows for the single head to be struck with the right hand. The left hand supports the base in keeping the drum stable during performance.
Construction: It is made from a single piece of jackfruit wood. The single head is usually of goat skin. It is head firmly in place by rattan; the base of the pedestal is left open. The head is about 23 cm in diameter. The goatskin is braced with a zigzag lacing of split cane, rattan or chord or sometimes metal ring which passes around the wast of the drum. Two large loops of rattan are often fixed around the waist allow for the drum to be carried.
Citations: Bibliography: Jack Percival ; Baker Dobbs ; Margaret J. Kartomi Page Geib [ii] 31 – Stanley Sadie ~ New Grove Dictionary of Musical Instruments Volume Two G – O ISBN: 0-943818-05-2 ;