Do Re MiC D E

About A Quarter To Nine

Harry Warren / Al Dubin(1935)2/2swing

Chord Diagrams — About A Quarter To Nine in C (Guitar)

Display
FingerNoteDegree
Starting fret
Open123456789101112
G7
5frEADGBE11x324
EADGBE321
3frEADGBE111132
10frEADGBE111134
Cm
5frEADGBE1142xx
EADGBEx3214
3frEADGBE111342
8frEADGBE111134
Fm
3frEADGBExx1342
EADGBE111134
8frEADGBE111342
10frEADGBE1142xx
Fm7♭5
EADGBE222xx1
EADGBE1x23x
8frEADGBEx1324x
11frEADGBE2134x
A♯7
EADGBE111x34
6frEADGBE111132
8frEADGBE11x324
11frEADGBEx3241x
Fm7/D
EADGBE111113
3frEADGBExx1423
8frEADGBE111132
9frEADGBExx2314
D♯/D
EADGBExx1243
3frEADGBE11x432
6frEADGBE11x234
8frEADGBE111xx4
D♯
EADGBExx1243
3frEADGBE11x432
6frEADGBE11x234
8frEADGBE111xx4
Gaug
EADGBE321x
3frEADGBE1x423x
4frEADGBE11xx2x
8frEADGBE11x32x
Fm6/C
EADGBE1x234
3frEADGBE11xx32
6frEADGBE11x324
9frEADGBExx2314
D7
EADGBExx213
3frEADGBEx3241x
5frEADGBE111134
10frEADGBE111132
Dm7♭5
EADGBE111xx
3frEADGBE11x342
5frEADGBEx1324x
8frEADGBEx1432
D♯7
EADGBExx1324
6frEADGBE111x34
8frEADGBE111xx2
11frEADGBE111132
A♯m7
EADGBE111x32
EADGBExx2314
6frEADGBE111113
8frEADGBE11x423
G♯
EADGBE11132x
4frEADGBE111342
6frEADGBE11x243
8frEADGBE111432
Bdim
EADGBEx3x2
EADGBEx1243x
5frEADGBE31x42x
9frEADGBExx12x3
Cdim/C♯
EADGBEx41x23
3frEADGBEx1243x
6frEADGBE31x42x
10frEADGBExx12x3
D♯7/D
EADGBExx1324
6frEADGBE111x34
8frEADGBE111xx2
11frEADGBE111132
Cdim/G
EADGBEx41x23
3frEADGBEx1243x
6frEADGBE31x42x
10frEADGBExx12x3
G♯/E
EADGBE11132x
4frEADGBE111342
6frEADGBE11x243
8frEADGBE111432
B7
EADGBEx2134
EADGBE111134
4frEADGBE111xx2
7frEADGBE111132
E
EADGBE231
2frEADGBExx1243
4frEADGBE111432
7frEADGBE111234
C♯m
EADGBEx4213x
4frEADGBE111342
6frEADGBE1132x4
9frEADGBE111134
Cm/C♯
EADGBEx3214
3frEADGBE111342
5frEADGBE1142xx
8frEADGBE111134
Gm7
3frEADGBE111113
5frEADGBE11x423
8frEADGBE11x234
10frEADGBE111132
Gm
3frEADGBE111134
EADGBE2134
5frEADGBExx1342
10frEADGBE111342
C7
3frEADGBE111134
EADGBEx3241
5frEADGBE111xx2
8frEADGBE111132
F7
3frEADGBE11x324
EADGBE111132
8frEADGBE111134
10frEADGBE111xx2
Cdim
3frEADGBEx1243x
EADGBEx41x23
6frEADGBE31x42x
10frEADGBExx12x3

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About A Quarter To Nine in C

Key of C

With no sharps or flats, C major is the theoretical home base on guitar. The open G, B, and high E strings all belong to the C major chord, creating natural sustain. C is a beginner-level key on guitar because the open B and high E strings ring within the scale, and every basic chord uses familiar open shapes. Beginners will find this key approachable since most chords use open voicings with minimal stretching.

Voice Leading

The bass line moves through G to C (ascending perfect fourth), C to F (ascending perfect fourth), F to F (ascending unison), F to A# (ascending perfect fourth), A# to F (descending perfect fourth), F to D# (descending whole step), D# to D# (ascending unison), D# to G (ascending major third), G to F (descending whole step), F to D (descending minor third), D to D (ascending unison), D to D# (ascending half step), D# to A# (descending perfect fourth), A# to G# (descending whole step), G# to B (ascending minor third), B to C (ascending half step), C to D# (ascending minor third), D# to C (descending minor third), C to G# (descending major third), G# to B (ascending minor third), B to E (ascending perfect fourth), E to C# (descending minor third), C# to C (descending half step), C to G (descending perfect fourth), G to G (ascending unison), G to C (ascending perfect fourth), C to F (ascending perfect fourth), F to C (descending perfect fourth). A half-step bass movement creates a strong leading-tone pull that demands resolution. The root motion by larger intervals (fourths and fifths) gives each chord change a strong, decisive character. When the progression loops, the bass returns from C to G by perfect fourth.

Scales for Improvisation

C major pentatonic works because every note is either a chord tone or a safe passing tone — there are no avoid notes. For soloing, this means you can play freely without clashing. Over dominant seventh chords, C Mixolydian adds the flat seventh for an authentic blues-rock edge.

swing2/2 · 41 bars · Form: AB

Chords: G7, Cm, Fm, Fm7♭5, A♯7, Fm7/D, D♯/D, D♯, Gaug, Fm6/C, D7, Dm7♭5, D♯7, A♯m7, G♯, Bdim, Cdim/C♯, D♯7/D, Cdim/G, G♯/E, B7, E, C♯m, Cm/C♯, Gm7, Gm, C7, F7, Cdim.

Scales for Improvisation C bebop minor, C bebop.

Diatonic chords: See all chords in the key of C