Watch And Hear Keira Knightley Sing (VIDEO)

A clip has hit the web of Keira Knightley singing Blue Tahitian Moon in a scene from "The Edge of Love," which costars Sienna Miller and Cillian Murphy, with a screenplay written by Knightley's mom Sharman Macdonald. The Edge of Love, says IMDB, "tells the story of two feisty, free-spirited women are connected by the brilliant, charismatic poet who loves them both." And Keira sings. It opens in the UK next month.