Japanese folk singer Chiharu Matsuyama sang his hit song on a plane that remained grounded over an hour past its departure time at a Hokkaido airport Sunday in a bid to ease passengers' irritation, according to All Nippon Airways Co.Matsuyama, a Hokkaido native, came forward and sang the popular opening line of "Ozora to Daichi no Naka de" (In-between a giant sky and the earth) through a microphone for in-flight announcements. The episode drew applause on social media, with some posts apparently from passengers saying it was a happy surprise.Chiharu Matsuyama inside ANA aircraft (Supplied by passenger)The 61-year-old singer-songwriter was aboard ANA …READ FULL ARTICLE