▁Sch o enberg ' s ▁Mos es ▁und ▁Ar on ▁in ▁June ▁ 1 9 5 7 , ▁and ▁from ▁ 1 9 5 9 ▁to ▁ 1 9 6 1 ▁she ▁sang ▁at ▁the ▁C ologne ▁Opera . ▁She ▁gained ▁significant ▁attention ▁for ▁singing ▁alto ▁on ▁Klaus ▁Martin ▁Z ieg ler ' s ▁recording ▁of ▁Bach ' s ▁Er sch al let , ▁ihr ▁L ieder , ▁er k ling et , ▁ihr ▁S ait en ! ▁B W V ▁ 1 7 2 , ▁with ▁Urs ula ▁Buck el , ▁The o ▁Alt me yer , ▁and ▁Jakob ▁St ämp fli ▁in ▁ 1 9 6 6 . ▁ ▁References ▁ ▁Category : Sw iss ▁opera ▁sing ers ▁Category : M ez zo - s op ran os ▁Category : 1 9 2 4 ▁birth s ▁Category : 1 9 8 2 ▁death s ▁Category : 2 0 th - century ▁opera ▁sing ers ▁Category : 2 0 th - century ▁women ▁opera ▁sing ers <0x0A> </s> ▁Equ ip ment ▁and ▁Tool ▁Institute ▁( ET I ) ▁is ▁a ▁US - based ▁non - pro fit ▁autom ot ive ▁trade ▁association . ▁Its ▁ 7 0 + ▁member ▁companies ▁supply ▁products ▁to ▁vehicle ▁manufact ur ers ▁and ▁the ▁after - market ▁industry . ▁E TI ▁is ▁managed ▁by ▁a ▁small ▁staff ▁consisting ▁of ▁an ▁executive ▁manager , ▁technical ▁manager ▁and ▁a ▁market ing ▁manager . ▁Its ▁member ▁company ▁represent atives ▁contribute ▁to ▁the ▁various ▁technical ▁groups . ▁ ▁Techn ical ▁focus