▁ 1 8 4 4 – 1 8 4 5 ▁she ▁was ▁engaged ▁in ▁the ▁Saint ▁Petersburg ▁Imperial ▁Bol sh oi ▁K amen ny ▁Theatre ; ▁later , ▁in ▁ 1 8 4 6 – 4 7 , ▁she ▁tou red ▁the ▁principal ▁cities ▁of ▁Central ▁Europe , ▁finally ▁reaching ▁London ▁and ▁Paris , ▁where ▁she ▁settled ▁perman ently . ▁In ▁London , ▁" she ▁appeared ▁in ▁leading ▁roles ▁by ▁Ross ini ▁and ▁Don iz etti ▁( where ▁she ▁out sh one ▁Giul ia ▁Gr isi ▁and ▁Jen ny ▁Lind ) ▁and ▁also ▁sang ▁Cher ub ino ▁( perform ing ▁with ▁Henri ette ▁S ont ag ) ". ▁For ▁the ▁ 1 8 4 8 ▁London ▁run ▁of ▁Les ▁H ug uen ots , ▁Meyer be er ▁trans posed ▁the ▁role ▁of ▁the ▁page ▁" U rb ain " ▁' from ▁sop rano ▁to ▁contr al to ▁and ▁composed ▁the ▁aria ▁" Non ! ▁– ▁non , ▁non , ▁non , ▁non , ▁non ! ▁V ous ▁n ' ave z ▁jamais , ▁je ▁g age " ▁ ▁in ▁Act ▁ 2 ' ▁for ▁her . ▁On ▁ 2 8 ▁August ▁ 1 8 4 8 , ▁she ▁sang ▁at ▁a ▁concert ▁in ▁Manchester ' s ▁Con cert ▁Hall , ▁sharing ▁the ▁stage ▁with ▁Lorenzo ▁Sal vi ▁and ▁Fr éd éric ▁Ch op in . ▁She ▁tou red ▁the ▁United ▁States ▁in ▁ 1 8 5 2 – 5 3 , ▁appearing ▁there ▁with ▁Camil la ▁Ur so . ▁ ▁In ▁ 1