Urumi, a traditional folk instrument with heads on two sides commonly found in Tamil Nadu. Urumi is used for performances of a number of regional folk dances. The shell of the instrument is hour-glass shaped and is scooped out from a single block of wood, usually Jackwood. Urumi consists of two heads made of cow skin stretched over metal rings and held in tension by means of a continuous rope woven around the shell. The pitch of the instrument can be varied by squeezing the rope, thereby altering the tension. Small metal rings can be found on the ropes, which can be used to adjust the tension of the heads. Urumi is slung from the neck with cloth straps and is played with sticks on both hands.