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C♭7 Chord on Guitar, Piano and Ukelele [C♭ Dominant 7th Chord] How to Play it

The C♭ dominant 7th chord (C♭7) is built from a root note (C♭), a major third (E♭), a perfect fifth (G♭) and a minor seventh (B♭♭):

  • Type: major tetrad.
  • Formule: 1 3 5 ♭7.
  • Music notes: C♭ (1) E♭ (3) G♭ (5) B♭♭ (♭7).
  • Chords to play with: IVmaj7 (F♭maj7) y V7 (G♭m7).
C♭7 chord pentagram staff stave

C♭7 chord [Musical explanation]

The C♭ dominant seventh chord is a tetrad with formula 1 – 3 – 5 – ♭7. Therefore, to build it we need C♭ (1), E♭ (3), G♭ (5) and B♭♭ (♭7):

what notes are in the Cbmaj7 chord

This is due to the fact that a dominant seventh chord is made up of 3 third intervals:

  • A major interval (4 half steps between the 3rd and root).
  • A minor interval (3 half steps between the 5th and 3rd).
  • A minor interval (3 half steps between the 7th and 5th).

If we apply this principle to the C♭7 chord we obtain that:

  • E♭ is the major third of C♭ because it is 4 half steps above the root.
  • G♭ is the perfect fifth of C♭ because it is 3 half steps above the 3rd.
  • B♭♭ is the major seventh of C♭ because it is 3 half steps above the 5th.

Thus, this confirms that a major seventh chord is defined by:

Root (C♭) – Major Third (E♭) – Perfect Fifth (G♭) – Minor Seventh (B♭♭)

To sum up, in order to build the C♭7 chord we need to add the minor seventh (7th) to the C♭ major chord.

C♭7 Guitar Chord

The C♭7 chord guitar has the following shape on the fretboard:

C♭7 guitar chord
C♭7 guitar diagram

Let’s analyze in detail this chord diagram above to make sure that we understand how to play the C♭7 on guitar.

Let’s start by analyzing the 2 circles in blue, which indicate that on the strings 4 (D) and 2 (B) we have to place the fingers 2 (middle) and 4 (pinky). In this case we have a barre chord, so we have to use as well the index finger (1) to press down the strings from 5 to 1.

Note by the way the number 2 in black on the left that indicates on which fret we start playing the chord.

On the other hand, at the top we see that we have the characters:

C♭  G♭  B♭♭  E♭ G♭

This simply means that in the:

  • Sixth string there is no sound.
  • Fifth string sounds the C♭ note.
  • Fourth string sounds the G♭ note.
  • Third string sounds the B♭♭ note.
  • Second string sounds the E♭ note.
  • First string sounds the G♭ note.

And at the bottom we find the numbers:

1  5  ♭7  3 5

This indicates that in the:

  • Sixth string There is no number because there is no sound.
  • Fifth string sounds the root (1).
  • Fourth string sounds the major third (3).
  • Third string sounds the minor seveth (♭7).
  • Second string sounds the major third (1).
  • First string sounds the major third (3).

⚠️ Important: it is not mandatory to memorize all this information to play the C♭7 chord on guitar. But it is highly recommended to know it in order to understand the musical theory behind each chord.

Other ways to play the C dominant 7 guitar chord

In addition to the diagram shown at the beginning of the article, we can also find the C♭7 chord in the following fretboard positions:

Cb7 chord guitar chart
C♭7 chord guitar chart

C♭7 chord inversions

The 3 inversions of the C♭ 7th chord are:

  • First inversion: C♭7/E♭.
  • Second inversion: C♭7/G♭.
  • Third inversion: C♭7/B♭♭.
Cb7 guitar chord inversion

C♭7 Ukulele Chord

Here you can see as well the C♭7 uke chord diagram:

C♭7 ukulele
C♭7 on ukulele

C♭7 Piano Chord

To play the C♭7 chord on piano we only need to find the same music notes on its keys:

C♭7 piano chord
C♭7 piano

First Inversion (C♭7/E♭)

C♭7 piano chord first inversion C♭7E♭

Second Inversión (C♭7/G♭)

C♭7 piano chord second inversion C♭7G♭

Third Inversión (C♭7/B♭♭)

C♭7 piano chord third inversion C♭7B♭♭

Music scales in which the C♭ minor 7th chord can be found

  • F♭ major scale (armonizada por cuatríadas)
    • F♭maj7 G♭m7 A♭m7 B♭♭maj7 C♭7 D♭m7 E♭m7♭5
  • D♭ natural minor scale (armonizada por cuatríadas)
    • D♭m7 E♭m7♭5 F♭maj7 G♭m7 A♭m7 B♭♭maj7 C♭7
  • F♭ harmonic minor scale (armonizada por cuatríadas)
    • F♭m(maj7) G♭m7♭5 A♭♭maj7#5 B♭♭m7 C♭7 D♭♭maj7 E♭dim7
  • G♭ melodic minor scale (armonizada por cuatríadas)
    • G♭m(maj7) A♭m7 B♭♭maj7#5 C♭7 D♭7 E♭dim7 G♭♭m7♭5
  • F♭ melodic minor scale (armonizada por cuatríadas)
    • F♭m(maj7) G♭m7 A♭♭maj7#5 B♭♭7 C♭7 D♭dim7 E♭m7♭5

C♭7 Chord PDF

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