Filmmaker Long Xi Vlessing’s grandmother isn't an avid writer, but she writes stories in her own way: sewing them into her blankets and quilts. In BLANKET SONG, she faintly narrates her creations, and Vlessing regards them up close with the warped glass lens of his broken camera, a laptop webcam, and a clunky Xerox scanner. If quilts are the most analogue, hands-on medium, the ...