avoid note - music-tech-box

avoid note

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In modal terms, the available scale steps of the mode (or available tensions for the chords) of the diatonic scale steps are those a whole step above the chord tones, and the avoid notes are those that are not. The only exception is the Dorian mode of the second scale degree, where the sixth is avoided although it is a whole step above the fifth; this is because the tritone between this and the third scale step would give an unwanted dominant chord quality.

https://en.wikipedia.org/wiki/Avoid_note

Taking C major as an example, the avoid notes are:

table:Avoid notes for modes of the C major scale

Scale degree Chord Mode Avoid note Available tensions

1 Cmaj7 Ionian Fourth scale step, F 9, 13

2 Dm7 Dorian Sixth scale step, B 9, 11

3 Em7 Phrygian Second and sixth scale steps, F and C 11

4 Fmaj7 Lydian No avoid note 9, ♯11, 13

5 G7 Mixolydian Fourth scale step, C 9, 13

6 Am7 Aeolian Sixth scale step, F 9, 11

7 Bø7 Locrian Second scale step, C 11, ♭13

#dissonance

#chord-scale_system