25 or 6 to 4 by Chicago

Overview

Key: A minor · Chords used: 13 · Sections: 11

Form: Intro → Verse → Chorus → Interlude → Verse → Chorus → Instrumental → Pre-Verse → Verse → Chorus → Outro

Where these chords come from: an expert transcription of the original recording made for the McGill Billboard Project (Burgoyne, Wild & Fujinaga, 2011). This page shows that transcription 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

Intro

• Am – Am/G – Am/F♯ – Fmaj7 – E7 (×4)
  i – i (bass G) – i (bass F♯) – bVImaj7 – V7

Verse 1

• Am – Am/G – Am/F♯ – Fmaj7 – E7 (×4)
  i – i (bass G) – i (bass F♯) – bVImaj7 – V7

Chorus 1

• F – C – G – F
  bVI – bIII – bVII – bVI

Interlude

• Am – Am/G – Am/F♯ – Fmaj7 – E7 (×2)
  i – i (bass G) – i (bass F♯) – bVImaj7 – V7

Verse 2

Same chords as Verse 1.

Chorus 2

Same chords as Chorus 1.

Instrumental

• Am – Am/G – Am/F♯ – Fmaj7 – E7 (×12)
  i – i (bass G) – i (bass F♯) – bVImaj7 – V7

Pre-Verse

• Am – Am/G – Am/F♯ – Fmaj7 – E7 (×4)
  i – i (bass G) – i (bass F♯) – bVImaj7 – V7

Verse 3

Same chords as Verse 1.

Chorus 3

Same chords as Chorus 1.

Outro

• Am – Am/G – Am/F♯ – Fmaj7 – E7 (×2)
  i – i (bass G) – i (bass F♯) – bVImaj7 – V7
• Dmadd9 – Cmadd9 – B7 – G7/B♭ – B/A
  ivadd9 – biiiadd9 – II7 – bVII7 (bass B♭) – II (bass A)

Chord vocabulary

Sources & accuracy

• Chords and sections: the McGill Billboard Project (Burgoyne, Wild & Fujinaga, 2011). Expert transcription by trained musicians (song 0176, CC0), via ChoCo.
• Not verified: only one expert transcription of this song is available so far.
• 1 chord was 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.