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 [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):
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:
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:
X 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:
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♭♭.
C♭7 Ukulele Chord
Here you can see as well the C♭7 uke chord diagram:
C♭7 Piano Chord
To play the C♭7 chord on piano we only need to find the same music notes on its keys:
First Inversion (C♭7/E♭)
Second Inversión (C♭7/G♭)
Third Inversión (C♭7/B♭♭)
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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