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Ombulumbumba (Ombulumba, Ombumbumba) musical bow among other instruments of Ovimbundu people from Angola's Benguela province (speaking Umbundu languages). The bridge, which is a small stone, or a piece of wood placed at one end of the bow, keeps the string taut. The gourd is tightly fastened to the bowstring with a loop of string. One end of the bow is sometimes placed in the player's mouth. The left hand holds the bow and presses the gourd to the body, then releases it a little from time to time in order to assist tone and resonance. The player holds in his right hand a reed which is tapped lightly on the bowstring, while the thumb and forefinger of the left hand are used occasionally in pressing on the string to alter its vibrating length (Plate XXII, Fig. 6).