ances . ▁This ▁is ▁important ▁to ▁note ▁because ▁the ▁Sin hal ese ▁dance ▁is ▁not ▁set ▁to ▁music ▁as ▁the ▁western ▁world ▁knows ▁it ; ▁rh ythm ▁is ▁king . ▁ ▁The ▁fl utes ▁of ▁metal ▁such ▁as ▁silver ▁& ▁br ass ▁produce ▁shr ill ▁music ▁to ▁accomp any ▁K and yan ▁D ances , ▁while ▁the ▁pla int ive ▁stra ins ▁of ▁music ▁of ▁the ▁re ed ▁fl ute ▁may ▁pier ce ▁the ▁air ▁in ▁devil - dan cing . ▁The ▁con ch - shell ▁( H ak ged i ya ) ▁is ▁another ▁form ▁of ▁a ▁natural ▁instrument , ▁and ▁the ▁player ▁blow s ▁it ▁to ▁announ ce ▁the ▁opening ▁of ▁cer emon ies ▁of ▁grande ur . ▁ ▁The ▁Rav an ah ath a ▁( ra van hat ta , ▁raw an hat tha , ▁ra van astr on ▁or ▁rav ana ▁hasta ▁ve ena ) ▁is ▁a ▁bow ed ▁fiddle ▁popular ▁in ▁Western ▁India . ▁It ▁is ▁believed ▁to ▁have ▁origin ated ▁among ▁the ▁H ela ▁civil isation ▁of ▁Sri ▁L anka ▁in ▁the ▁time ▁of ▁King ▁Rav ana . ▁The ▁bow l ▁is ▁made ▁of ▁cut ▁co con ut ▁shell , ▁the ▁mouth ▁of ▁which ▁is ▁covered ▁with ▁go at ▁hide . ▁A ▁d and i , ▁made ▁of ▁b am bo o , ▁is ▁attached ▁to ▁this ▁shell . ▁The ▁principal ▁strings ▁are ▁two : ▁one ▁of ▁steel ▁and ▁the ▁other ▁of ▁a ▁set ▁of ▁horse h air . ▁The ▁long ▁bow ▁has ▁j ing le ▁b