From boosting the brain to reducing pain, joining others in song can bring some wide-ranging benefits. It’s that time of year when the air starts to tinkle with angelic voices – or ring with the occasional lusty hymn – as carol singers spread their own indomitable brand of festive joy. All that harking and heralding.

“The Age of Disclosure,” which originally premiered at the South by Southwest film festival, will also have a limited release in theaters in New York, Los Angeles and Washington, D.C., beginning on the same date. “The Age of Disclosure,” which originally premiered at the South by Southwest film festival, will also have a limited release