Singing, like dancing, seems to lift people's spirits, taking them out of their daily troubles and into a flow state. It also has strange effects on people: yes, for those that know her, that is my wife gazing lovingly at the choirmaster (who also happens to be her boss's husband!) Mind you, she's had a thing about Gareth Malone for years, so I guess I shouldn't be too surprised.
If you've ever wondered why bird species sing in a particular order as the sun rises, rhe UK Wildlife Trusts and the Royal Horticultural Society, which run the Big Wildlife Garden competition, explain what you might hear and when.
Up at 5am on 17th May 2012; the Belgian dawn not only full of unseasonal frost, but also alive with an almost deafening inter-bird competition to see how could rule the airwaves. Need to do that again as the longer days have arrived in Spring 2016.