How Long Has This Been Going On?
George GershwinGeorge Gershwin
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A1
- C7
- Cdim7
- C7F7
- B♭7E♭7
- FMaj7A♭dim7
- G–7C7F7
- B♭Maj7C7(♭13)
- FMaj7
- F6C–7F7
B
- B♭Maj7E♭7
- B♭Maj7E♭7
- B♭Maj7E♭7
- B♭Maj7B–7(♭5)E7
- A–7E7(♭9)
- A–7E7(♭9)
- A–7E7(♭9)
- A–7A♭7
A2
- C7
- Cdim7
- C7F7
- B♭7E♭7
- FMaj7A♭dim7
- G–7C7F7
- B♭Maj7C7(♭13)
- F6