Blues School: Major Blues: Mixolydian Scale-Chords

Time and time again, you are going to rediscover that scales and chords are intimately inter-related. Knowing your chords helps you know your scales and knowing your scales helps you know your chords! One way to conceive of the basic major Blues chords (I7-IV7-V7) is as three sets of matched "scale-chords" or "chord-scales" as follows:

The C7 chord is matched with the C Mixolydian scale...

Mixolydian Scale

 

The F7 chord is matched with the F Mixolydian scale...

Mixolydian Scale

 

The G7 chord is matched with the G Mixolydian scale...

Mixolydian Scale

 

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In summary, understanding and mastering such scale-chord relationships is a prerequisite to fluent improvisation. Knowing where the notes are, how they relate to each other, and how they look and feel on the keyboard will also pay huge dividends when sight reading, transposing, and playing by ear!