Imagery is usually much more effective than knowledge of anatomy when it comes to singing.
Just as when a child is learning to walk, and the only picture the child has in his or her head is arriving where Mom or Dad is crouched down, encouraging them – so the pictures in our head as we sing will guide us more effectively than constantly checking in on what every muscle, cavity and sinew is up to.
The latest effective image that I’ve discovered and tested with all my groups is the Goldfish Bowl.
Pretty simple. Hold a large, imaginary Goldfish Bowl, about the size of a volleyball, up near your face at about shoulder level – then look slightly downward and sing into it – imagining that you are filling it with sound and warm air as you sing.
Bigger, richer and much more cohesive sound from the chorus
I chose a Goldfish Bowl because it’s transparent. When you lower your hands again, it’s easier to imagine that a glass bowl is still there.