▁such ▁as ▁the ▁Campbell ▁Can nt aire ach d ▁MS , ▁in ▁arrang ements ▁that ▁employ ▁a ▁mob ility ▁of ▁dr one ▁effects ▁on ▁the ▁reson ant ▁wire ▁strings , ▁reverse ▁engineering ▁the ▁shift ▁to ▁fixed ▁d ron es ▁that ▁would ▁have ▁occurred ▁in ▁an ▁appropri ation ▁of ▁har p ▁music ▁by ▁the ▁bag pip es . ▁ ▁Vi ola ine ▁Mayor ▁is ▁a ▁Bre ton ▁wire - str ung ▁har per ▁who ▁has ▁master ed ▁can nt aire ach d ▁chant ing . ▁She ▁has ▁recorded ▁trans cribed ▁p ib ro ch ▁together ▁with ▁rev ived ▁Bre ton ▁har p ▁re per toire ▁such ▁as ▁medieval ▁b ard ic ▁l ays . ▁ ▁Kar en ▁Marsh als ay ▁is ▁a ▁Scottish ▁har per ▁who ▁performed ▁with ▁All an ▁Mac Donald ▁in ▁his ▁ 2 0 0 4 ▁Edinburgh ▁International ▁Festival ▁series ▁of ▁p ib ro ch ▁concert s ▁From ▁Battle ▁L ines ▁to ▁Bar ▁L ines , ▁performing ▁The ▁Battle ▁of ▁The ▁Bridge ▁of ▁Per th ▁and ▁other ▁p ib ro chs ▁on ▁wire - str ung ▁cl ars ach . ▁ ▁She ▁also ▁performed ▁p ib ro ch ▁on ▁wire - str ung ▁cl ars ach ▁and ▁music ▁from ▁the ▁Robert ▁ap ▁H uw ▁ms ▁on ▁b ray ▁har p ▁at ▁the ▁National ▁P ip ing ▁Centre ’ s ▁ 2 0 1 3 ▁Ce ò l ▁na ▁P ì oba ▁concert . ▁She ▁later ▁recorded ▁The ▁Battle ▁of ▁the ▁Bridge ▁of ▁Per th ▁in ▁a ▁ 2 0 1 9