Apparently, monkey brains are wired with something unofficially called "mirror neurons." These neurons fire when one monkey watches another monkey peel and eat a piece of fruit. The cool thing about mirror neurons is that the monkey without the fruit gets to experience all that the monkey with the fruit experiences, up to and including the feelings the fruit may engender. Apparently, human brains can work this way, too. What this means is that we not only learn by watching, we experience by watching.
This is seriously important for music and performance art. When we share the real deal with our audience, they experience the real deal. When we share from our souls, our audience may find the chords we strike sounding within their own souls. Then, they may step out of the performance hall and share those sounds with the next fifteen people they meet.
Ideas will pass from person to person without the benefit of writing, education, intention or societal goal. One person's creativity may light up the creative parts of another's brain, and two artists will be born. Compassion, which is feeling with another, is born in sharing. Whether it is transmitted by "mirroring neurons" brain to brain, or whether it is simply the idea that I know how I feel and I want to protect others from that feeling, or pass that feeling along to the next person I meet, authentic singing is a way to begin the practice of compassion.
When I begin to see that power in music, it becomes apparent how dangerous the arts can be.