Reharmonize

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How Long Has This Been Going On?

George Gershwin

Chord chart

A
C7(Gm7)F♯°7)
C°7(Gm7)C7)
C7(Cm7)F7(F7)
B♭7(B♭maj7)E♭7
Fmaj7A♭°7
Gm7C7(Am7)F7(D7)
B♭maj7(Gm7)C7♭13
1.
Fmaj7
2.
F6Cm7F7
B
B♭maj7E♭7
B♭maj7E♭7
B♭maj7E♭7
B♭maj7BøE7
Am7E7♭9
Am7E7♭9
Am7E7♭9
Am7A♭7
A
C7(Gm7)F♯°7)
C°7(Gm7)C7)
C7(Cm7)F7(F7)
B♭7(B♭maj7)E♭7
Fmaj7A♭°7
Gm7C7(Am7)F7(D7)
B♭maj7(Gm7)C7♭13
F6

Chord progressions sourced from community-uploaded data for educational practice. Used in good faith for learning purposes.Harmonically dense tune — multiple chords per bar.

Recordings

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Tunes are scored by shared chord-progression vocabulary. The label (e.g. ‘Coltrane changes’, ‘ii–V heavy’) explains why two tunes are related. The dots show how strong the match is — 5 dots = near-identical changes, 1 dot = loose harmonic kinship.
Match strength