John Krasinski apparently had no idea that his wife, actress Emily Blunt, could sing until she filmed the 2014 movie musical "Into the Woods." Krasinski, who married Blunt in 2010, said in Blunt's new Vanity Fair cover story: "I had literally never heard her sing a note. I was really nervous for her." The 'Office' alum said the first time he heard Blunt sing was during a recording sessions for "Into the Woods.