Foggy Day by George Gershwin

Overview

Key: F major · Chords used: 30 · Sections: 5

Form: A Section → B Section → A Section → C Section → Tag

Where these chords come from: a chord chart of this song written by a musician and shared on the iReal Pro forums, archived in the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). It's one musician's reading of the song, not a transcription checked against the recording. This page shows that chart as-is: the analysis below is generated directly from it by code, not written by AI. Consecutive repeats of a chord are shown once, and the piano voicings are our playable arrangement of each chord symbol, not a note-for-note transcription.

Section by section

A Section 1

• Fmaj7 – Am7♭5 – D7♯9 – Gm7 – C7♯11 – F69 – Dm7♭5 – G7♯9 – Gm7 – C13
  Imaj7 – iiiø7 – VI7#9 – ii7 – V7#11 – I69 – viø7 – II7#9 – ii7 – V13

B Section

• Fmaj7 – D♭7♯9 – Cm7 – B13 – B♭maj7 – B♭m7 – E♭9 – Am7 – D7♯9 – Gm9 – C9
  Imaj7 – bVI7#9 – v7 – #IV13 – IVmaj7 – iv7 – bVII9 – iii7 – VI7#9 – ii9 – V9

A Section 2

• Fmaj7 – Gm7 – A♭m9 – D♭13 – Gm7 – C7♯11 – F69 – Dm7♭5 – G7♯9 – Gm7 – C13
  Imaj7 – ii7 – biii9 – bVI13 – ii7 – V7#11 – I69 – viø7 – II7#9 – ii7 – V13

C Section

• F69 – D♭13 – Cm9 – B7♯9 – B♭maj7 – E♭7♯11 – Fmaj7 – Gm7 – Am7 – B♭m6 – Am7 – D7♯9 – Gm7 – G♭7♭9 – F6
  I69 – bVI13 – v9 – #IV7#9 – IVmaj7 – bVII7#11 – Imaj7 – ii7 – iii7 – iv6 – iii7 – VI7#9 – ii7 – bII7b9 – I6

Tag

• C7 – Bm7♭5 – B♭m7 – Am7 – A♭7♯11 – Gm7 – G♭7♯11 – Fmaj7
  V7 – #ivø7 – iv7 – iii7 – bIII7#11 – ii7 – bII7#11 – Imaj7

Chord vocabulary

Chord	Roman numeral	Role	Heard in
Fmaj7	Imaj7	Home chord (tonic)	A Section, B Section, C Section, Tag
Am7♭5	iiiø7	Outside the key (chromatic)	A Section
D7♯9	VI7#9	Secondary dominant (V/ii)	A Section, B Section, C Section
Gm7	ii7	In the key	A Section, C Section, Tag
C7♯11	V7#11	Outside the key (chromatic)	A Section
F69	I69	Home chord (tonic)	A Section, C Section
Dm7♭5	viø7	Outside the key (chromatic)	A Section
G7♯9	II7#9	Outside the key (chromatic)	A Section
C13	V13	In the key	A Section
D♭7♯9	bVI7#9	Outside the key (chromatic)	B Section
Cm7	v7	Borrowed from F minor	B Section
B13	#IV13	Outside the key (chromatic)	B Section
B♭maj7	IVmaj7	In the key	B Section, C Section
B♭m7	iv7	Borrowed from F minor	B Section, Tag
E♭9	bVII9	Borrowed from F minor	B Section
Am7	iii7	In the key	B Section, C Section, Tag
Gm9	ii9	In the key	B Section
C9	V9	In the key	B Section
A♭m9	biii9	Outside the key (chromatic)	A Section
D♭13	bVI13	Outside the key (chromatic)	A Section, C Section
Cm9	v9	Outside the key (chromatic)	C Section
B7♯9	#IV7#9	Outside the key (chromatic)	C Section
E♭7♯11	bVII7#11	Outside the key (chromatic)	C Section
B♭m6	iv6	Borrowed from F minor	C Section
G♭7♭9	bII7b9	Outside the key (chromatic)	C Section
F6	I6	Home chord (tonic)	C Section
C7	V7	In the key	Tag
Bm7♭5	#ivø7	Outside the key (chromatic)	Tag
A♭7♯11	bIII7#11	Outside the key (chromatic)	Tag
G♭7♯11	bII7#11	Outside the key (chromatic)	Tag

Harmonic highlights

• Cm7 (v7) is borrowed from the parallel key, F minor.
• B♭m7 (iv7) is borrowed from the parallel key, F minor.
• E♭9 (bVII9) is borrowed from the parallel key, F minor.
• B♭m6 (iv6) is borrowed from the parallel key, F minor.
• D7♯9 acts as V/ii: it resolves to Gm7.

Sources & accuracy

• Chords: the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). Community chord chart “Foggy Day-Rev JE” (credited “Gershwin George”, style Swing Two-Four) from the forum file linked here, CC BY 4.0 via ChoCo. Artist as credited on the chart.
• Section names: from the chart's own markings: section names written on the chart (Intro, Verse, Chorus…) are kept, and rehearsal letters are shown as “A Section”, “B Section” and so on (the B of an AABA song is called the Bridge).
• Cross-check: the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). Community chord chart “Foggy Day-Rev JE” (credited “Gershwin George”, style Swing Two-Four) from the forum file linked here, CC BY 4.0 via ChoCo. Artist as credited on the chart. A separately posted chart of the same song; its chords match this page's closely when both are read in the same key (similarity 83%).
• Chord charts are often written in a key that suits a particular singer or band, so this may not be the key of the original recording.
• Verified: two community charts of this song, posted in different forum threads, agree on its harmony. They're still charts, not transcriptions checked against the recording.
• 12 chords were simplified to the closest symbol our player supports (for example, an unusual added tone dropped).
• Rhythm and chord durations aren't shown; each step is one chord change.