Have you ever been surprised by the fact that a lyric singer with his voice can without a microphone fill a concert hall while passing through an orchestra? There is a very simple reason for this. The singer produces "harmonics" in his voice! Although it is difficult to explain, I would say that it is about a sound mass where the sound becomes almost matter! And to produce this, the singer sings in what is called, according to the baths of the teaching, the "Mask" or to be more precise in anatomical baths the "NasoPharynx" which is a space inside the head where the sound goes, a sound box to amplify the sound! It may sound surprising, but it is quite possible to learn this through vocal technique, and you might be surprised at yourself! By the vocal technique, I also mean the management of the breath, with a diaphragm that goes down very low, because the breath is the basis of singing!