Originally Posted by: kill em allI read over and over and over and eat and then read again, but I just don't understand why the "Aeolian mode" is not referred to as "diatonic minor scale" and why the "Ionian mode" is not referred to as "diatonic major scale", get my problem? What's the difference in modes and scales and why are there only seven scales ( or am I wrong there? ) turned to modes.

Aeolian is the natural minor. It is 1 2 3b 4 5 6b 7b
Ionian is major- 1 2 3 4 5 6 7
Phrygian(minor)- 1 2b 3b 4 5 6b 7b
Dorian(minor)-1 2 3b 4 5 6(raised) 7b
Mixolydian(major)-1 2 3 4 5 6 7b
lydian(major)-1 2 3 4# 5 6 7
Locrian(half diminished*)- 1 2b 3b 4 5b 6b 7b
Harmonic minor- 1 2 3b 4 5 6b 7
Melodic minor- 1 2 3b 4 5 6 7

That should cover most of your scale formulas