What are the chords in the key of B Major?

The seven diatonic chords in the key of B Major are: B, C#m, D#m, E, F#, G#m, A#m. These correspond to the Roman numerals I, ii, iii, IV, V, vi, vii.

What are common chord progressions in the key of B Major?

Two of the most popular progressions in B Major are the I–V–vi–IV (B – F# – G#m – E) and the I–IV–V–I (B – E – F# – B). These appear in countless pop, rock, and folk songs.

Chords in the Key of B Major

The key of B Major contains seven diatonic chords: B, C#m, D#m, E, F#, G#m, A#m. Use the interactive generator below to build progressions, hear them played back with drums and accompaniment, and export to MIDI.

Diatonic Chords in B Major

C#m

iii

D#m

G#m

vii

A#m

Relative Minor

The relative minor of B Major is Ab Minor. Both keys share the same set of notes and diatonic chords, but centre on a different tonic — making Ab Minor the natural choice for a darker or more melancholic feel.

Modes of B Major

Every mode below is built from the same seven notes as B Major, starting on a different scale degree.

B MajorI – ii – iii – IV – V – vi – vii

Db Doriani – ii – III – IV – v – vi – VII

Eb Phrygiani – II – III – iv – v – VI – vii

E LydianI – II – iii – iv – V – vi – vii

Gb MixolydianI – ii – iii – IV – v – vi – VII

Ab Minori – ii – III – iv – v – VI – VII

About B Major

B Major's five sharps give it a bright, piercing quality that can feel intense and energetic. While less common than guitar-friendly keys like G or D, B Major is used effectively in pop, rock, and electronic music.

On guitar, most B Major chords require barre shapes, which makes it more demanding to play but also produces a tighter, more controlled sound. Many guitarists use a capo to simplify B Major voicings.

In classical music, B Major is associated with brilliant, crystalline textures — Chopin wrote several notable works in this key. In modern production, the key's distinctiveness makes it a strong choice when a song needs to stand apart from the pack.