Formula 1 3 5 b7. In C: C, E, G, Bb. Listen to it below, then train your ears to recognise it.
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See Mentorship PlansA major chord with a minor 7th added. It contains a tritone, which makes it want to resolve, usually to the chord a 5th below. It's also the sound of the blues, where every chord in a 12-bar can be a 7th.
The formula is 1 3 5 b7: in C that's C, E, G, Bb. It's written C7.
| Chord | Notes |
|---|---|
| C7 | C E G B♭ |
| D♭7 | D♭ F A♭ C♭ |
| D7 | D F♯ A C |
| E♭7 | E♭ G B♭ D♭ |
| E7 | E G♯ B D |
| F7 | F A C E♭ |
| F♯7 | F♯ A♯ C♯ E |
| G7 | G B D F |
| A♭7 | A♭ C E♭ G♭ |
| A7 | A C♯ E G |
| B♭7 | B♭ D F A♭ |
| B7 | B D♯ F♯ A |
To see every way to play it, open it in the Fretboard Navigator, which shows voicings all over the neck in any key.
MajorMinorAugmentedDiminishedSus2Sus4Major 7thMinor 7thMinor major 7thHalf-diminished 7thDiminished 7thMajor 6thMinor 6th7sus4Add9Dominant 9thMajor 9thMinor 9th
All chord types · Intervals · The full Ear Trainer
A dominant 7th chord is built from 1 3 5 b7 of its major scale. In C that's C, E, G, Bb.
It's usually written C7, using C as the example.