After You've Gone by Turner Layton

Overview

Key: B♭ major · Chords used: 17 · Sections: 5

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

Where these chords come from: a lead sheet of this public-domain song, contributed by a musician to the Wikifonia archive and preserved in the OpenEWLD lead-sheet collection (Simonetta et al., 2018). It describes the song as written, not any particular recording. This page shows that lead sheet 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 – E♭m6 – B♭maj7 – G9 – C9 – F9 – B♭ – B♭7
  IVmaj7 – iv6 – Imaj7 – VI9 – II9 – V9 – I – I7

B Section

• E♭maj7 – A♭9 – B♭maj7 – G7 – Cm – G7 – Cm7 – A♭9 – B♭ – D7 – Gm7 – A7
  IVmaj7 – bVII9 – Imaj7 – VI7 – ii – VI7 – ii7 – bVII9 – I – III7 – vi7 – VII7

C Section

• B♭ – Gm7 – Cm7 – F7 – B♭ – E♭ – B♭ – F7 – B♭7 – E♭maj7 – E♭m6 – B♭maj7 – G9
  I – vi7 – ii7 – V7 – I – IV – I – V7 – I7 – IVmaj7 – iv6 – Imaj7 – VI9

D Section

• C9 – F9 – B♭ – B♭7 – E♭maj7 – A♭9 – B♭maj7 – G7
  II9 – V9 – I – I7 – IVmaj7 – bVII9 – Imaj7 – VI7

E Section

• Cm – G7 – Cm7 – A♭9 – B♭ – D7 – Gm7 – A7 – B♭ – Gm7 – Cm7 – F7 – B♭ – E♭ – B♭
  ii – VI7 – ii7 – bVII9 – I – III7 – vi7 – VII7 – I – vi7 – ii7 – V7 – I – IV – I

Chord vocabulary

Harmonic highlights

• E♭m6 (iv6) is borrowed from the parallel key, B♭ minor.
• A♭9 (bVII9) is borrowed from the parallel key, B♭ minor.
• C9 acts as V/V: it resolves to F9.
• B♭7 acts as V/IV: it resolves to E♭maj7.
• G7 acts as V/ii: it resolves to Cm.
• D7 acts as V/vi: it resolves to Gm7.

Sources & accuracy

• Chords: the OpenEWLD lead-sheet collection (Simonetta et al., 2018). Community-contributed lead sheet (chord symbols over the melody) from the Wikifonia archive, MIT licence. Title and songwriter credit as written on the sheet.
• Section names: detected by code from repeated 8-, 12- and 16-bar phrases (letters such as A and B mark different phrases; a phrase that comes back keeps its letter). Lead sheets rarely print section names.
• Not verified: only one lead sheet of this song is available, so it hasn't been cross-checked.
• Rhythm and chord durations aren't shown; each step is one chord change.