Keys: chords and scales

Chords in the key of B major

The key of B major has 5 sharps in the key signature (F♯, C♯, G♯, D♯, A♯). Its scale is B – C♯ – D♯ – E – F♯ – G♯ – A♯ and its seven chords are B, C♯m, D♯m, E, F♯, G♯m and A♯dim. The most common progression is B – F♯ – G♯m – E. Its relative key is G sharp minor. With a capo on fret 2, you can play it with the shapes of A major.

The chords in the key

B is home; E and F♯ create the movement and tension that lead back to it, and G♯m adds the minor colour. The four-note versions add the seventh.

DegreeChordNotesRoleWith seventh
I B B – D♯ – F♯ Tonic: home Bmaj7
ii C♯m C♯ – E – G♯ Subdominant C♯m7
iii D♯m D♯ – F♯ – A♯ Tonic substitute D♯m7
IV E E – G♯ – B Subdominant Emaj7
V F♯ F♯ – A♯ – C♯ Dominant: tension F♯7
vi G♯m G♯ – B – D♯ Relative tonic G♯m7
vii° A♯dim A♯ – C♯ – E Dominant (leading tone) —

Scale

B – C♯ – D♯ – E – F♯ – G♯ – A♯

With a capo

To make a song sound in B major with easy open shapes:

  • Capo on fret 2: play the shapes of A major
  • Capo on fret 4: play the shapes of G major
  • Capo on fret 7: play the shapes of E major

Frequently asked questions

What chords are in the key of B major?

Its seven chords are B, C♯m, D♯m, E, F♯, G♯m and A♯dim.

How many sharps or flats does B major have?

It has 5 sharps in the key signature (F♯, C♯, G♯, D♯, A♯).

What is the relative key of B major?

Its relative key is G sharp minor: they share the same notes and chords.