- Meter
- 4/4
- Form
- A-B-C
- Bars
- 12
- Usual key
- F
Its three four-bar lines answer one another: four bars on I with a quick change to IV in bar 2, two on IV and two back on I, then V, IV and I with V in the last bar to turn it around. Dominant 7ths on every chord, the tonic included, are what make it sound like the blues. Practice the blues scale over the whole form, then learn to hear each change and follow it with the chord’s 3rd and 7th.
Reharmonize Analyze these changes
Variations
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Blues with ii-V
I7 | IV7 | I7 | % | IV7 | % | I7 | % …
In Gb: Gb7 Cb7 Gb7 Cb7 Gb7 Abm7 Db7 Gb7 …
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Jazz Blues
I7 | IV7 | I7 | % | IV7 | ♯iv°7 | I7 | VI7 …
In Gb: Gb7 Cb7 Gb7 Cb7 Cdim7 Gb7 Eb7 Abm7 …
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Bebop Blues
I7 | IV7 | I7 | v7 I7 | IV7 | ♯iv°7 | I7 | iii7 VI7 …
In Gb: Gb7 Cb7 Gb7 Dbm7 Gb7 Cb7 Cdim7 Gb7 …
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Bird Blues
Imaj7 | viiø7 III7 | vi7 II7 | v7 I7 | IV7 | iv7 ♭VII7 | iii7 VI7 | ♭iii7 ♭VI7 …
In Gb: Gbmaj7 Fm7b5 Bb7 Ebm7 Ab7 Dbm7 Gb7 Cb7 …