Petra Haden is a talented violinist and singer who has performed with everyone from The Decemberists to Victoria Williams to Sunn O))). On her YouTube channel, she also posts really impressive a capella versions of such movie themes as The Exorcist (Tubular Bells), Star Trek: The Original Series, and the theme to the 60s Batman TV show. She's also done a capella covers of Bowie's Life on Mars, King Crimson's Frame by Frame, the Furs' Ghost in You, and other pop and progressive tunes.
Here, she does a seriously beautiful and haunting rendition of the Vangelis Blade Runner theme, complete with Deckard's voice commands as he navigates an image of the replicant Zhora.
