1. Your ear listens and tunes into the frequency of the note while your voice matches it. This conditions the subconscious and muscles to sing the correct pitches.
2. Your breath is to be totally exhausted after after tuning with the 9 notes. Take a breath then sing the ending arpeggio of notes 3 5 3 1. Your breath should be exhausted after these 4 notes also.
3. You stretch your voice to the highest notes possible.
This is the first exercise to warm up when starting the vocalizing tune up routine.
Use your Keyboard to generate note tones for you where you match with your voice. Five first notes of a scale, walking progression up and down, then the notes of the chord up and down for 5 notes.
First: play chord, notes 1 3 5,
Second: the first 5 notes of the particular scale up then down 1 2 3 4 5 4 3 2 1
Third: play the chord again, notes 1 3 5
Then move up one semitone and do the next 5 note scale. Tune your vocal range from your highest to your lowest notes possible. Concentrate on making your voice matching the piano tone exactly.
You should do this in all the 5 vowels, a e i o u. Vary the sounds from the keyboard from piano to organ to violin to guitar, etc.
You need to condition your voice to get up to F5.
Every vowel vocalized should have one vibrato wave in it.
If you have time constraints at least pick two vowels and alternate the vowels every tuning session. This being a quick warmup to the more thorough 5 vowel voice tuning exercises.
While the right hand is playing the notes you are vocalizing, in the left hand play an octave, or play the chord, or arpeggiate the chord. Just sound this briefly. This conditions you to playing piano when you later grow into playing chords and melodies.
Vibrato should be practiced while using a metronome (on your phone). Your cycles must match the beats.