▁appeared ▁with ▁the ▁New ▁England ▁Opera ▁from ▁ 1 9 4 8 - 5 2 . ▁She ▁then ▁left ▁for ▁Italy ▁to ▁complete ▁her ▁vocal ▁studies ▁at ▁the ▁Acc adem ia ▁Nazionale ▁di ▁Santa ▁Cec ilia ▁in ▁Rome , ▁with ▁Luigi ▁Ric ci ▁and ▁N azz ar eno ▁De ▁Angel is . ▁ ▁As ▁a ▁student ▁she ▁sang ▁Po pp ae a ▁in ▁L ' in cor on azione ▁di ▁Po ppe a ▁and ▁appeared ▁with ▁the ▁Boston ▁Sym phony ▁Orchestra . ▁She ▁continued ▁her ▁studies ▁at ▁the ▁Ber k shire ▁Music ▁Center ▁in ▁T angle wood , ▁MA . ▁ ▁Career ▁ ▁Between ▁ 1 9 4 8 ▁- ▁ 5 2 ▁she ▁sang ▁with ▁the ▁New ▁England ▁Opera ▁Company . ▁ ▁Metropol ital ▁Opera ▁ ▁E lias ▁made ▁her ▁Metropolitan ▁Opera ▁debut ▁as ▁Gr im ger de ▁in ▁Wagner ' s ▁Die ▁Walk ü re , ▁on ▁February ▁ 2 3 , ▁ 1 9 5 4 . ▁She ▁sang ▁ 6 8 7 ▁performances ▁of ▁ 5 4 ▁roles ▁there , ▁including ▁B ers i ▁in ▁Gi ord ano ' s ▁Andrea ▁Ch én ier , ▁the ▁title ▁role ▁in ▁B iz et ' s ▁Car men , ▁Ros ina ▁in ▁The ▁Bar ber ▁of ▁Se ville , ▁ ▁Laura ▁in ▁La ▁G io conda , ▁Su zu ki ▁in ▁Mad ama ▁But ter fly , ▁Sie bel ▁in ▁Fa ust , ▁ ▁Nancy ▁in ▁Mar tha , ▁Cher ub ino ▁and ▁Mar cell ina ▁in ▁The ▁Mar riage ▁of