Open and Relax The Back Of Your Mouth

This is equally as important as allowing the front of the mouth to be open, if not more. If the back of the mouth is closed off, then the quality of the sound is shot and you're tensed. To get a feel for it, hold the “ng” sound of king and feel how closed that is. Now say “ah” like you’re in a doctor’s office… that’s more open. Leaving the back of the mouth open like the “ah” sound can help create a beautiful resonance in the voice.