The science behind singing in a choir

Whether you're singing in a karaoke room at 2am, or at a more reasonable time with a local choir, there’s something about singing without inhibition that feels great. Our brains get this warm fuzzy feeling when we come together and sing as a group - and it turns out there's neuroscience that backs that up. So what are the health benefits for our brain and mental health? Should we all be joining a community choir?Guest: Lucy Sweeney for ABC Online