The act of singing looks simple but actually involves highly skilled control and coordination of muscles – and these muscles need to be both flexible and strong. True control comes from training.
A person needs to be able to control the air pressure in their lungs and use their abdominal muscles to push air through the trachea, where it meets the vocal folds, which start to vibrate. In a really good singer, vocal health, posture and alignment, breath management are matched with imagination, self-expression and creativity.
As singing voice teacher Jeannette Lovetri writes:
It takes about 10 years to be a master singer. Ten years of study, investigation, involvement, experience, experiment, exploration, and development, and in some way, that’s when you start really being an artist.(via)]]>