▁of ▁the ▁full ▁score . ▁For ▁the ▁Cov ent ▁Garden ▁performances , ▁with ▁José ▁Car rer as ▁as ▁St iff el io , ▁Philip ▁G os sett ▁made ▁pre lim inary ▁corre ctions ▁of ▁the ▁vocal ▁parts ▁only , ▁based ▁on ▁the ▁newly ▁recovered ▁aut ograph ▁materials . ▁ ▁Although ▁vocal ▁scores ▁were ▁known , ▁the ▁discovery ▁of ▁a ▁copy ist ' s ▁score ▁at ▁the ▁Nap les ▁Conserv atory ▁in ▁the ▁ 1 9 6 0 s ▁led ▁to ▁a ▁successful ▁rev ival ▁at ▁the ▁Teatro ▁Reg io ▁in ▁Par ma ▁in ▁ 1 9 6 8 . ▁▁ ▁A ▁new ▁performing ▁edition , ▁prepared ▁for ▁B ären re iter ▁from ▁micro film ▁of ▁the ▁Nap les ▁copy ist ' s ▁score , ▁was ▁obtained ▁in ▁order ▁to ▁restore ▁the ▁composer ' s ▁intent ions ▁as ▁far ▁as ▁possible . ▁ ▁This ▁was ▁the ▁basis ▁of ▁performances ▁at ▁Nap les ▁and ▁C ologne , ▁but ▁it ▁cut ▁material ▁( es pecially ▁from ▁the ▁act ▁ 1 ▁over t ure ▁and ▁ch or uses ) ▁and ▁it ▁added ▁in ▁sections ▁from ▁A ro ld o , ▁which ▁were ▁not ▁in ▁the ▁original ▁score . ▁ ▁This ▁became ▁the ▁source ▁of ▁the ▁UK ▁premi ere ▁in ▁an ▁English ▁language ▁production ▁given ▁by ▁University ▁College ▁Opera ▁( then ▁the ▁Music ▁Society ) ▁in ▁London ▁in ▁ 1 9 7 3 . ▁ ▁Given ▁that ▁even ▁the ▁original ▁premi ere ▁of ▁the ▁work ▁was ▁in ▁a ▁version ▁partly ▁cut ▁by ▁the ▁cens ors , ▁this ▁production