Singing correctly for choir doesn’t require all that much effort if you know the tricks of classical signers. You don’t have to be an opera singer to use the middle register, but using proper form when singing for choir will assure that you’ll be able to sing for many many years without ruining your voice and that you will sound great doing it.
Most problems singers face come from the fact that they are too tensed when singing, and as a result they use the chest register more than the middle and head registers. The trick I’m about to tell you will change all that.
Start singing a soft “ee” in the middle of your range and at a note that feels comfortable.
Sustaining this “ee” start moving your head downwards towards your chest.
As soon as you do that, you’ll see that immediately your sound changes to a richer and clearer “ee.” The effect will be less pronounced, the better your command of the three registers.
Trying singing the same “ee” but instead of moving your head downwards, move it upwards towards the ceiling. You’ll see that this has the opposite effect; your sound becomes thinner and poorer in quality.
Now don’t go around singing with your chin pressed against your chest, it looks funny.
The reason your sound becomes richer when you lower your head is because at the same time you lower your larynx and that creates a larger space in your voice box for the sound to amplify. The larger the space, the richer the sound. The same holds for musical instruments. Think about it: a violin and a viola can play the same note, but the viola is going to have a richer sounding note because of the larger belly.
But how can you achieve the same effect without looking funny? The idea is that you have to keep your larynx a little lower than usual. You can achieve that by either opening your mouth more, letting your jaw hang loosely and lowering your tongue. It should all be very loose and relaxed.
Unlike what most people think, you don’t need to lower your larynx all that much! I’ve seen people use bow-ties on their Adam’s Apple to work on lowering their larynx and others over stressing it trying to glue their chin in their chest. If it feels hard doing it and you feel you’re over stressing your muscles, stop right now.
When you lower your larynx properly and in a relaxed manner, your Adam’s Apple moves about half an inch. That’s it. If you put the tip of your finger on it and lower your larynx, you should still be able to feel your Adam’s Apple at the bottom of your finger. If it’s gone too far down, well, it’s gone too far down and you’re over stressing it.
Trying singing a few o’s and oo’s and remember, singing is about being relaaaaaxed.