In middle voice, you should feel the vibration partially leave the chest area and move closer to the area just behind your nose and eyes. This area has been given many names over the years, but it’s most commonly called the mask. The air and tone bouncing around the sinus area can feel as gentle as a minor flutter or buzz. Close your lips and say mmmmmmmm. You should feel your lips vibrating as sound hits them from the inside of your mouth.
