You’ll notice that if you are trying to reach for a note, then your tongue might move around more. This can actually make it more difficult to hit the note that you are striving for.
If you are sitting while singing, try standing up to expand your range. To check your posture, look in a mirror. Practice correcting your posture until it feels natural.
Rolling your shoulders and rotating your neck can help you to relax while humming.
If it helps, try imagining that you have a golf ball at the front of your mouth and you don’t want it to fall back while you’re singing.
Don’t let your breath get stuck back in your throat—you want it to be at the front of your mouth where you should be singing from.
Singers with a chest voice often find it easier to hit lower registers. If you have a nasal voice, it may take more time and effort to consistently hit low notes, but it is still possible.
As you sing “mee,” pay attention to your resonance. You should feel more facial vibrations as you head into lower notes. Don’t be concerned if your volume decreases when you sing “mee” in a lower register. This is normal.
A professional vocal coach can also point out weaknesses and suggest ways to improve.
Place your hand gently against your face or throat to concentrate on actually feeling the vibrations. If you don’t feel any vibrations, keep practicing. Intermixing humming with singing might help, too.
After saying the words, sing the same words. Your vocal chords should be at the correct spot to sing in the lower register.
The mic should not be touching your lips or you’ll potentially end up with sputtering noises.
Similarly, lifting your eyebrows may improve your sound as well, but that’s not as certain.