Gus Van Sant's new film is about Kurt Cobain's last days. Or is it? Even the director doesn't seem sure. The haunting Last Days opens and closes with a recording of Jancquin's La Guerre, a powerful 14th-century French chorale piece. Resonating with grace, it perfectly bookends Gus Van Sant's spare, empathetic film about the anguish, demise, and resurrection of a Kurt Cobain-like rock star. Howard Feinstein reports in The Guardian.