I Concentrate on You by Cole Porter

Overview

Key: E♭ major · Chords used: 34 · Sections: 4

Form: A Section → B Section → C Section → D Section

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

• E♭maj7 – A♭7♯11 – E♭m7 – D♭m7 – G♭7 – Bmaj7 – Fm7♭5 – B♭7♭9 – E♭m7 – Cm7♭5 – B7♯11 – B♭7 – E♭6 – Fm7 – B♭7
  Imaj7 – IV7#11 – i7 – bvii7 – bIII7 – #Vmaj7 – iiø7 – V7b9 – i7 – viø7 – #V7#11 – V7 – I6 – ii7 – V7

B Section

• E♭maj7 – A♭7♯11 – E♭m7 – D♭m7 – G♭7 – C♭maj7 – A♭m7 – D♭7 – G♭maj7 – Bmaj7 – F7 – B♭7 – E♭6 – E♭7
  Imaj7 – IV7#11 – i7 – bvii7 – bIII7 – bVImaj7 – iv7 – bVII7 – bIIImaj7 – #Vmaj7 – II7 – V7 – I6 – I7

C Section

• A♭ – A♭m7 – D♭7 – E♭maj7 – Gm7 – C7♯9 – Fm7 – B♭7 – E♭maj7 – A7♯11 – A♭maj7 – A♭m7 – G♭maj7 – E♭m7 – E♭m7/C♯ – Cm7♭5 – F7 – B♭maj7 – B♭7
  IV – iv7 – bVII7 – Imaj7 – iii7 – VI7#9 – ii7 – V7 – Imaj7 – #IV7#11 – IVmaj7 – iv7 – bIIImaj7 – i7 – i⁴₂ – viø7 – II7 – Vmaj7 – V7

D Section

• E♭6 – A♭7♯11 – Am7♭5 – D7 – B♭m7 – E♭7 – Dm7♭5 – G7 – Gm7♭5 – C7 – Fm7 – F♯dim7 – B7♯11 – B♭7 – E♭6
  I6 – IV7#11 – #ivø7 – VII7 – v7 – I7 – viiø7 – III7 – iiiø7 – VI7 – ii7 – #ii°7 – #V7#11 – V7 – I6

Chord vocabulary

Chord	Roman numeral	Role	Heard in
E♭maj7	Imaj7	Home chord (tonic)	A Section, B Section, C Section
A♭7♯11	IV7#11	Outside the key (chromatic)	A Section, B Section, D Section
E♭m7	i7	Borrowed from E♭ minor	A Section, B Section, C Section
D♭m7	bvii7	Outside the key (chromatic)	A Section, B Section
G♭7	bIII7	Outside the key (chromatic)	A Section, B Section
Bmaj7	#Vmaj7	Borrowed from E♭ minor	A Section, B Section
Fm7♭5	iiø7	Borrowed from E♭ minor	A Section
B♭7♭9	V7b9	Borrowed from E♭ minor	A Section
Cm7♭5	viø7	Outside the key (chromatic)	A Section, C Section
B7♯11	#V7#11	Outside the key (chromatic)	A Section, D Section
B♭7	V7	In the key	A Section, B Section, C Section, D Section
E♭6	I6	Home chord (tonic)	A Section, B Section, D Section
Fm7	ii7	In the key	A Section, C Section, D Section
C♭maj7	bVImaj7	Borrowed from E♭ minor	B Section
A♭m7	iv7	Borrowed from E♭ minor	B Section, C Section
D♭7	bVII7	Borrowed from E♭ minor	B Section, C Section
G♭maj7	bIIImaj7	Borrowed from E♭ minor	B Section, C Section
F7	II7	Secondary dominant (V/V)	B Section, C Section
E♭7	I7	Outside the key (chromatic)	B Section, D Section
A♭	IV	In the key	C Section
Gm7	iii7	In the key	C Section
C7♯9	VI7#9	Secondary dominant (V/ii)	C Section
A7♯11	#IV7#11	Outside the key (chromatic)	C Section
A♭maj7	IVmaj7	In the key	C Section
E♭m7/C♯	i⁴₂	Borrowed from E♭ minor	C Section
B♭maj7	Vmaj7	Outside the key (chromatic)	C Section
Am7♭5	#ivø7	Outside the key (chromatic)	D Section
D7	VII7	Outside the key (chromatic)	D Section
B♭m7	v7	Borrowed from E♭ minor	D Section
Dm7♭5	viiø7	In the key	D Section
G7	III7	Outside the key (chromatic)	D Section
Gm7♭5	iiiø7	Outside the key (chromatic)	D Section
C7	VI7	Secondary dominant (V/ii)	D Section
F♯dim7	#ii°7	Outside the key (chromatic)	D Section

Harmonic highlights

• E♭m7 (i7) is borrowed from the parallel key, E♭ minor.
• Bmaj7 (#Vmaj7) is borrowed from the parallel key, E♭ minor.
• Fm7♭5 (iiø7) is borrowed from the parallel key, E♭ minor.
• B♭7♭9 (V7b9) is borrowed from the parallel key, E♭ minor.
• C♭maj7 (bVImaj7) is borrowed from the parallel key, E♭ minor.
• A♭m7 (iv7) is borrowed from the parallel key, E♭ minor.
• D♭7 (bVII7) is borrowed from the parallel key, E♭ minor.
• G♭maj7 (bIIImaj7) is borrowed from the parallel key, E♭ minor.
• E♭m7/C♯ (i⁴₂) is borrowed from the parallel key, E♭ minor.
• B♭m7 (v7) is borrowed from the parallel key, E♭ minor.
• F7 acts as V/V: it resolves to B♭7.
• C7♯9 acts as V/ii: it resolves to Fm7.
• C7 acts as V/ii: it resolves to Fm7.

Sources & accuracy

• Chords: the iReal Pro forum charts archived in ChoCo (de Berardinis et al., 2023). Community chord chart “I Concentrate On You” (credited “Porter Cole”, style Up Tempo Swing) from the forum file linked here, CC BY 4.0 via ChoCo. Performer/songwriter confirmed from Wikidata.
• 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 “I Concentrate On You” (credited “Porter Cole”, style Bossa Nova) from the forum file linked here, CC BY 4.0 via ChoCo. Performer/songwriter confirmed from Wikidata. A separately posted chart of the same song; its chords match this page's closely when both are read in the same key (similarity 63%).
• 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.
• About the song: Wikipedia.
• 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.
• Rhythm and chord durations aren't shown; each step is one chord change.