STANDARD TUNING
OBJECTIVE
This conditions you to sing in the 12 scales. This warm up is mainly to loosen up the cavities under the frontal cortex and the upper nasal cavity loosening the soft palate. As you vocalize your resonance should be focused there. Humming naturally stimulates that area so that is another way to tune up. Scales also condition the subconscious. Scales are important.
No one sings at 0 perfect pitch. When you start tuning up your notes will be off around 4 cents sharp or flat. By tuning up you sharpen your accuracy to less than 2 cents sharp or flat.
Most of the time the sheet music is written in the scale of F or G for easy piano playing with only one shrap or one flat compared to 4 sharps in the key of E. An E scale is 4 scales off from a simplified scale. If you have practiced singing to the original song in the original key, and the piano player is playing the simplified scale sheet music, you will have to adjust your singing notes to that simplified scale and not fall back on your memorized notes in the original scale.
HOW. 10 min
Go to your lowest note and play the chord of that scale. Then correctly finger while singing that scale going up. Take a breath. Then finger and sing that scale going down. Move up a semi tone. Play the chord of that scale. Then finger that scale up, take a breath, then finger the scale down. Repeat this until you reach the highest note you can sing. Remember to focus your resonance to the frontal nasal chamber under the frontal cortex. By humming you can feel this area. Note duration is quarter notes. Keep the inner smile as you do this. Feel the vibration in the nasal cavity while at the same time opening up the chamber in the back of the mouth (raising the soft palate) and resonate that also. Sound is produced from the larynx so keep the path wide open to the resonant chambers of your mouth. This produces rich sound.
PRO TUNING
Do the same as above but tuning is extended to two octives in length. Note duration is eighth notes. Make the "yy" sound right before the vowel sound to make the vowel sound distinct. Do twice a day. After a week you will notice it's effect.
TUNING APP
You can use a tuning app to see how accurate you are when singing the notes. You can record your tuning on a DAW that has pitch correction to see your accuracy.