Justin Vernon (Bon Iver) fronts the band "Mount Vernon" back in his high school days. Other notable musicians in the group include Phil & Brad Cook (Megafaun) and Joe Westerlund (Megafaun; Grandma Sparrow).
Sara Jensen, the inspiration behind Bon Iver's first studio album, "For Emma, Forever Ago" was a saxophonist in the Mount Vernon band, she is not the girl singing however she appears at 1:29 and also later in the video sitting above the sofa.
A Famigerada "Emma" 1:41 Juntando tudo que encontrei, que a Emma do album se chama "Sara Emma JENSEN", de que a Emma real estava na banda de colegial (Mount Vernon) do Justin Vernon e que a Sara Jensen (A garota da gravação no momento 1:41) foi o primeiro amor dele que eles namoravam na época da banda até a faculdade e terminaram, creio que é realmente é a "Emma" do album.