Tomo Fujita Guitar Wisdom

Dear Tomo Sensei,

This has confused me for a long time and please answer when you are not busy.
1. What's the most professional way of singing do re mi fa so la ti when a sharp or flat is involved?
2. When in different mode, for example in A Aeolian (minor), and you have a riff ( A B C D E), do you sing(or think) as " la ti do re mi" or as " 1 2 3b 4 5"?
3. Am is 6m chord in C major and 1m(root chord) in A Minor, if you are writing a Minor song, do you think of the chord progression in C major or in A minor? For example, a "vi–IV–I–V" progression, some people say the correct way is to write it as "i - VI -III-VII" because it's minor.

Hope I'm describing my question correctly, I'm home teaching my 5year old and I want him to have the most authentic answer from the best music brain (yours ^_^) in the world.

Doumo Arigatou!
Bruce from Toronto, Canada

Here is Tomo's comment:

"Thank you so much for subscribing to my Guitar Wisdom. Please look at the Music Theory section to learn about modes. In a Lydian scale, for example, you would sing Do Re Mi Fi So La Ti Do.

"Sing Sharps as Di, Ri, Fi, Si, Li (C#, D#, F#, G#, A#…etc.).
Sing Flats as Me, Se, Le, Te…(Eb, Gb, Ab, Bb…etc.).

"This system is not perfect, but it's pretty good!"