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  Chord · 7th

How to play the B7 chord on guitar

B dominant seventh (B7) in standard tuning (EADGBE). Play the shape x21202 from the low E string to the high E string. The chord tones are B, D#, F#, A, and the lowest sounding note is B.

B7
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Fingering chart

StringFretNote
6th (low E)MutedNot played
5th (A)2B
4th (D)1D#
3rd (G)2A
2nd (B)OpenB
1st (high E)2F#

Notes and intervals

Formula 1 3 5 b7. This shape sounds each chord tone.

NoteDegreeInterval from BIn this shape
B1Root (0 semitones)Yes
D#3Major 3rd (4 semitones)Yes
F#5Perfect 5th (7 semitones)Yes
Ab7Minor 7th (10 semitones)Yes

Changing chords from B7

B7 sounds five strings with one string muted: four fretted positions between frets 1 and 2, plus one open string. The quickest changes leave fretted notes where they are, so the hand pivots instead of lifting off the neck. These are the chords in this library that share the most fretted notes with the B7 shape.

  • B7 to Bm7: keep three fretted notes in place (5th string fret 2, 3rd string fret 2, 1st string fret 2), two new positions to fret.
  • B7 to D: keep two fretted notes in place (3rd string fret 2, 1st string fret 2), one new position to fret.
  • B7 to D7: keep two fretted notes in place (3rd string fret 2, 1st string fret 2), one new position to fret.
  • B7 to Dmaj7: keep two fretted notes in place (3rd string fret 2, 1st string fret 2), one new position to fret.

Same root: B

  • Bm7: B minor seventh
  • Bm: B minor
  • B: B major

In the key of E major

  • E: I in E major
  • Emaj7: Imaj7 in E major
  • F#m: ii in E major
  • A: IV in E major
  • Amaj7: IVmaj7 in E major
  • C#m: vi in E major

See the major scale in all 12 keys for the notes of E major.