So why do all your American Idol favorites sing with huge mouths?
Answer: Because the big mouth is directly related to the freedom associated with making sounds found in contemporary styles such as rock, pop, gospel, jazz, musical theatre, country, and even opera!
The ability to get great cord closure (to sing high notes with thin and stretched cords), and resonate in the oropharynx (back of the throat and out through the mouth), is what we are talking about here. This means the soft palate is high enough (which it needs to be), and the jaw and tongue are relaxed enough (which they need to be), and the throat is open enough (which it needs to be), to allow the sound to project off the uvula and soft palate area. This creates great oral resonance (oral twang). With the right amount of breath support, this sensation is very freeing and very BUZZY. You will feel the buzzy vibrations on your upper teeth, the hard palate, in the nose, and even out the top of your head! But be careful. Make sure you are not just making head resonance. It needs to come out the front of your mouth! This is mixed voice (middle voice) in high gear, and the safest way to belt out your notes! This is what gives great singers the illusion that they are singing in the chest voice, when in fact, they are mixing like crazy (split resonance).
This is not easy to do, and it’s not as simple as described above. The actual critical playing card is your ability to control and manage your breathing.
Give it try. What do you think? Allow the voice to come out the mouth with the freedom of resonance in the head. Stick three fingers between your teeth to keep your jaw and tongue from gripping. I know it’s hard to form the consonants in your words…so just sing the vowels. If you can perfect this to a sound you like, you are well on your way!