I was recently told, that I should not consider ‘Bb, in the ‘C Ionian Scale, because: it does not exist in the, ‘C Major Scale…
http://www.fretjam.com/backdoor-progression.html
I think there are exceptions.
If the ‘Parent Major Scale of C is C, is the ‘Bb Major Scale’ compatible?
Calculating The PMS ( Parent Major Scale )…
Mode I II III IV V VI VII PMS
C Ionian C D E F G A B C – Maj
C Dorian C D Eb F G A Bb – Bb Maj
C Phrygian C Db Eb F G Ab Bb – Ab Maj
C Lydian C D E F# G A B – G Maj
C Mixolydian C D E F G A Bb – F Maj
C Aeolian C D Eb F G Ab Bb – Eb Maj
C Locrian C Db Eb F Gb Ab Bb – Db Maj
Mode I II III IV V VI VII PMS
Ionian 1 2 3 4 5 6 7 –
Dorian 1 2 b3 4 5 6 b7 – Down M2
Phrygian 1 b2 b3 4 5 b6 b7 – Up m6
Lydian 1 2 3 #4 5 6 7 – Up P5
Mixolydian 1 2 3 4 5 6 b7 – Up P4
Aeolian 1 2 b3 4 5 b6 b7 – Up m3
Locrian 1 b2 b3 4 b5 b6 b7 – Up m2.
Query… is ‘down’ towards the ‘Headstock-Nut’, or, is down, toward the ‘Bridge-Saddle?
What is obvious to others, requires ‘clarification’ to me. lol
Donn ___
Up and down refer to pitch so …
Up = towards the bridge
Down = towards the nut