Duri dana [druri dana, duri, da’uli-da’uli]
- Margaret J. Kartomi
- , revised by Andrew C. McGraw
[druri dana, duri, da’uli-da’uli]
Bamboo instrument of Nias, Indonesia, combining elements of an idiophone and an aerophone. It is made in the shape of a large tuning fork and consists of a hollow bamboo tube, with a node at the bottom end, cut away in the upper half to form two tongues about 2 cm apart. The bamboo tube is a tuned air column. On most instruments two circular fingerholes are drilled into opposite sides of the tube about 5 cm below the tongues. Most examples include a slit cut through the tube extending just above the fingerholes to the gap between the tongues. The end of the tongues can be cut to a straight or bevelled edge as in the angklung. The shape of this edge might affect the tuning of the instrument’s partials. The total length of the instrument varies between (but not within) villages from about 26 to 62 cm, and the width from about 2.6 to 5 cm. Two instruments, one in each hand, are struck rhythmically against the sides of the player’s right knee. The instrument’s partials are louder than its fundamental and are manipulated by closing the fingerholes; thus two pitches about a major 3rd apart are produced (one emphasizing the fourth partial and one the fifth). Reportedly, the lower partial of the left-hand instrument always falls between the pitches of the right-hand instrument. The instrument’s tone is similar to that of the Indonesian ...