▁vocals ▁on ▁Portal ▁of ▁Sor row , ▁the ▁final ▁album ▁by ▁black ▁metal ▁project ▁X as thur . ▁▁ 2 0 1 1 – 2 0 1 2 : ▁Mar issa ▁Nad ler ▁and ▁The ▁Sister ▁ ▁On ▁June ▁ 1 4 , ▁ 2 0 1 1 , ▁an ▁e pon ym ous ▁record ▁was ▁released ▁world wide ▁on ▁Nad ler ' s ▁own ▁label , ▁Box ▁of ▁C ed ar ▁Records . ▁The ▁song ▁" B aby , ▁I ▁Will ▁Le ave ▁You ▁in ▁the ▁Mor ning " ▁was ▁released ▁as ▁a ▁free ▁download ▁on ▁March ▁ 8 , ▁followed ▁by ▁a ▁subsequent ▁music ▁video . ▁The ▁album ▁was ▁posit ively ▁received ▁by ▁P itch f ork , ▁which ▁gave ▁it ▁ 8 . 1 ▁out ▁of ▁ 1 0 , ▁and ▁it ▁was ▁called ▁" a ▁stell ar ▁collection ▁of ▁sull en ▁mel od ies ▁and ▁lov el orn ▁an ec d otes ▁a kin ▁to ▁those ▁of ▁J oni ▁Mitchell ". ▁ ▁On ▁May ▁ 2 9 , ▁ 2 0 1 2 , ▁she ▁released ▁The ▁Sister , ▁a ▁short ▁eight - song ▁" comp an ion " ▁album ▁to ▁Mar issa ▁Nad ler . ▁The ▁album ▁was ▁dub bed ▁by ▁P aste ▁as ▁an ▁" im press ive ▁con co ction ▁of ▁stark ▁minimal ism ". ▁ ▁In ▁November ▁ 2 0 1 2 , ▁Nad ler ▁collabor ated ▁with ▁Angel ▁O ls en ▁on ▁two ▁cover ▁songs ▁that ▁were ▁shared ▁on ▁Nad ler ' s ▁Sound