Surely a good therapist should produce a Dorian Gray-style portrait from under the couch so the patient can see the person they really are.
Singing brings out in me what I can't normally bring out in everyday life. It's an incredible feeling to be able to bare your soul to people you've never met in a way that can make them understand so clearly what you mean. That's what I love most about singing. . . it becomes my truest form of communication.