. ▁N arr ative ▁verse ▁lo oms ▁large ▁in ▁the ▁traditional ▁folk ▁music ▁of ▁many ▁cult ures . ▁This ▁en comp ass es ▁such ▁forms ▁as ▁traditional ▁ep ic ▁poetry , ▁much ▁of ▁which ▁was ▁meant ▁originally ▁for ▁or al ▁performance , ▁sometimes ▁accompanied ▁by ▁instruments . ▁Many ▁ep ic ▁po ems ▁of ▁various ▁cult ures ▁were ▁pie ced ▁together ▁from ▁shorter ▁pieces ▁of ▁traditional ▁narr ative ▁verse , ▁which ▁explains ▁their ▁epis od ic ▁structure , ▁repet itive ▁elements , ▁and ▁their ▁frequent ▁in ▁med ias ▁res ▁plot ▁develop ments . ▁Other ▁forms ▁of ▁traditional ▁narr ative ▁verse ▁relate ▁the ▁out comes ▁of ▁batt les ▁or ▁describe ▁tra ged ies ▁or ▁natural ▁dis aster s . ▁ ▁Sometimes , ▁as ▁in ▁the ▁triumph ant ▁Song ▁of ▁Deb or ah ▁found ▁in ▁the ▁Bib lic al ▁Book ▁of ▁Jud ges , ▁these ▁songs ▁celebr ate ▁victory . ▁L aments ▁for ▁lost ▁batt les ▁and ▁wars , ▁and ▁the ▁lives ▁lost ▁in ▁them , ▁are ▁equally ▁prominent ▁in ▁many ▁trad itions ; ▁these ▁l aments ▁keep ▁alive ▁the ▁cause ▁for ▁which ▁the ▁battle ▁was ▁fought . ▁The ▁narr atives ▁of ▁traditional ▁songs ▁often ▁also ▁remember ▁folk ▁hero es ▁such ▁as ▁John ▁Henry ▁or ▁Robin ▁H ood . ▁Some ▁traditional ▁song ▁narr atives ▁recall ▁super natural ▁events ▁or ▁myster ious ▁death s . ▁ ▁H ym ns ▁and ▁other ▁forms ▁of ▁religious ▁music ▁are ▁often ▁of ▁traditional ▁and ▁unknown ▁origin . ▁Western ▁musical ▁notation ▁was ▁originally ▁created ▁to ▁preserve ▁the ▁lines ▁of ▁Greg or ian