icians . ▁They ▁were ▁the ▁first ▁vocal ▁group ▁to ▁become ▁country ▁music ▁stars ; ▁a ▁beginning ▁of ▁the ▁diver gence ▁of ▁country ▁music ▁from ▁traditional ▁folk ▁music . ▁Their ▁record ings ▁of ▁such ▁songs ▁as ▁" W ab ash ▁C annon ball " ▁( 1 9 3 2 ), ▁" Will ▁the ▁Circle ▁Be ▁Un bro ken " ▁( 1 9 3 5 ), ▁" W ild wood ▁F lower " ▁( 1 9 2 8 ), ▁and ▁" Ke ep ▁On ▁the ▁Sun ny ▁Side " ▁( 1 9 2 8 ) ▁made ▁them ▁country ▁standards . ▁ ▁Oklahoma ▁and ▁southern ▁US ▁pla ins : ▁ ▁Before ▁recorded ▁history ▁American ▁Indians ▁in ▁this ▁area ▁used ▁songs ▁and ▁instrument ation ; ▁music ▁and ▁dance ▁remain ▁the ▁core ▁of ▁cer emon ial ▁and ▁social ▁activities . ▁ ▁" St omp ▁dance " ▁remains ▁at ▁its ▁core , ▁a ▁call ▁and ▁response ▁form ; ▁instrument ation ▁is ▁provided ▁by ▁r att les ▁or ▁sh ack les ▁worn ▁on ▁the ▁legs ▁of ▁women . ▁ ▁" Other ▁sout he astern ▁nations ▁have ▁their ▁own ▁complex es ▁of ▁sacred ▁and ▁social ▁songs , ▁including ▁those ▁for ▁animal ▁d ances ▁and ▁friendship ▁d ances , ▁and ▁songs ▁that ▁accomp any ▁stick ball ▁games . ▁ ▁Central ▁to ▁the ▁music ▁of ▁the ▁southern ▁Pla ins ▁Indians ▁is ▁the ▁drum , ▁which ▁has ▁been ▁called ▁the ▁heart be at ▁of ▁Pla ins ▁Indian ▁music . ▁Most ▁of ▁that ▁genre ▁can ▁be ▁trac ed ▁back ▁to ▁activities ▁of ▁hunting ▁and ▁war