, ▁and ▁performed ▁the ▁role ▁also ▁in ▁the ▁U . K . ▁premi ere ▁at ▁the ▁Royal ▁Opera ▁House ▁in ▁London ▁a ▁year ▁later . ▁ ▁She ▁had ▁to ▁leave ▁Germany ▁under ▁the ▁Naz i ▁regime , ▁and ▁was ▁a ▁member ▁of ▁the ▁Vienna ▁State ▁Opera ▁from ▁ 1 9 3 4 ▁to ▁ 1 9 3 8 . ▁She ▁created ▁the ▁role ▁of ▁An ita ▁in ▁Le h ár ' s ▁Gi ud it ta , ▁alongside ▁J arm ila ▁Nov ot ná ▁and ▁Richard ▁Ta uber , ▁conducted ▁by ▁the ▁composer . ▁She ▁appeared ▁at ▁the ▁Sal zburg ▁Festival ▁from ▁ 1 9 3 5 , ▁as ▁Oct av ian ▁in ▁Der ▁Ros enk aval ier ▁by ▁Richard ▁Stra uss , ▁and ▁as ▁Z er l ina ▁in ▁Moz art ' s ▁Don ▁Giovanni , ▁among ▁others . ▁She ▁collabor ated ▁with ▁conduct ors ▁including ▁Bruno ▁Walter ▁and ▁Felix ▁von ▁We ing art ner . ▁In ▁Vienna , ▁major ▁roles ▁included ▁Ros al inde ▁in ▁Die ▁Fle der ma us ▁by ▁Johann ▁Stra uss , ▁Frau ▁Fl uth ▁in ▁Nicol ai ' s ▁Die ▁l ust igen ▁We iber ▁von ▁W inds or , ▁and ▁Alice ▁Ford ▁in ▁Ver di ' s ▁Fal st aff . ▁During ▁that ▁time , ▁she ▁appeared ▁at ▁the ▁Slov ak ian ▁National ▁Theatre ▁in ▁Br atis lava , ▁in ▁ 1 9 3 6 ▁in ▁Der ▁Z ige un er bar on ▁by ▁Johann ▁Stra uss , ▁and ▁in ▁ 1 9 3 7 ▁in