A singing career could be the result of lifelong, studied academics, or just luck. It can offer big satisfaction and very long hours of practice. For many people who want to be a singer, singing and performing is less about the money and more about passion. A singer with thick skin, able to withstand disappointments at auditions, could go from being an unknown to becoming famous.
Singing is to production of musical sound from the mouth. In physical terms singing depends on the lungs. Which supplies air to hold notes. All parts in your mouth function independently but work great together. Which turns into lovely music.
Studies show singing is linked with your heart rate. People who have trauma usually want to leave to body, and they do that do that by singing. Singing can also block pathways that pain goes throw in the body.