There are benefits of group singing.
What are some?
A sense of unity, improves mental alertness. Improved blood circulation and an oxygenated blood stream allow more oxygen to reach the brain.(this improves mental alertness, concentration, and memory), bonding, fun, happiness, learning to work together in unison with others has many more benefits. Go to the following sites and books that out line those benefits.
A Stacy Horn outlines her adventure in group singing in a book:
The New science of singing together:
So whether at church, the ball park (National Anthem) or in your family, or with friends at a party of elsewhere, singing with others is a good thing.
Catch you later and keep singing.