Standards

Billy Boy chords & key

Key
C major
Form
AABA
Bars
56
Groove
Medium-up swing
Time signature
4/4

“Billy Boy” is a jazz standard. Most bands play it in C major, medium-up swing; the tune runs 56 bars in AABA form. Harmonically it contains 8 major ii–V–I cadences and 11 minor ii–V–i, uses 16 different chords and moves between the key centres D minor, C major, F major and A minor. In this atlas it appears on 1 album track.

Chord changes

Showing in: Concert (C) — C major

A
Cmaj7A7
Dm7G7
Em7A7
Dm7G7
Cmaj7F7
Em7A7
Dm7
G7
Dm7
G7
Em7♭5
A7♭9
Dm7
G7
1.
Em7A7
Dm7G7
2.
Cmaj7
Gm7C7
B
Fmaj7
Fm6
Cmaj7
Bm7♭5E7♭9
Am7
D7
Dm7
G7
A
Cmaj7A7
Dm7G7
Em7A7
Dm7G7
Cmaj7F7
Em7A7
Dm7
G7
Dm7
G7
Em7♭5
A7♭9
Dm7
G7
Cmaj7
Dm7G7

Changes as commonly played (concert pitch). Your band's version may differ.

Harmonic analysis

8Major ii–V–I
11Minor ii–V–i
31ii–V moves
3Tritone substitutions
0Dominant chains
16Different chords

Most used chords

  • Dm7×18
  • G7×18
  • A7×10
  • Cmaj7×9
  • Em7×7
  • F7×3

Key centres reached by ii–V

D minor, C major, F major and A minor

Characteristics

  • AABA song form

Recorded on these albums

Standards with similar changes

Similarity of the chord progression, independent of key.

TitleComposerKeyFormGroove
When You Wish Upon A Star 43% Leigh Harline C major AABA · 32 Ballad
Elora 39% J.J. Johnson B♭ major AABA · 32 Medium swing
Oh, Lady Be Good 39% George Gershwin G major AABA · 32 Medium-up swing
Ceora 38% Lee Morgan A♭ major ABAC · 32 Bossa nova
I've Never Been In Love Before 38% Frank Loesser B♭ major AABA · 32 Medium swing
In Love In Vain 38% Leo Robin Jerome Kern B♭ major ABAC · 32 Medium swing
Don't Worry 'Bout Me 36% Rube Bloom A♭ major AB · 32 Ballad
If There Is Someone Lovelier 36% Dietz-Schwartz C major ABC · 28 Ballad

Frequently asked questions

What key is Billy Boy in?

Billy Boy is usually played in C major. For B♭ instruments that is D major, for E♭ instruments A major.

What is the form of Billy Boy?

Billy Boy has 4 sections (AABA) with 56 bars in total.

How fast is Billy Boy played?

The usual groove is Medium-up swing.

What are the chord changes to Billy Boy?

The opening bars are Cmaj7 A7 | Dm7 G7 | Em7 A7 | Dm7 G7. The full chart above can be transposed to any key.