Music Guide #2 – The Key Of B Flat Major

Chords In The Key Of B Flat Major

What are the chords in the key of B flat major?

Take a look at notes and chords in the key of B flat. On your instrument, this key is the same as A sharp, in terms of the piano keys to be played. But the key of A sharp is hardly used because of notation difficulties caused by the need for a double sharp. It’s a theoretical key.

A Sharp Major Scale: A#, B#, C#, D#, E#, F#, G#

Let’s talk about the B flat major scale. Like every other major scale, this scale follows the formula, root note, whole tone, whole tone, half tone, whole tone, whole tone, whole tone, half tone. The notes of the Bb major scale are therefore, Bb C D Eb F G A.

Bb major consists of two flats, Bb and Eb. Its relative minor is G minor.

Now that we know the notes of the Bb major scale, let’s take a look at the chords. Firstly, each chord is based on one of the notes in the major scale. In other words, each note is a root note for one of the chords in the key of B flat. To come up with these chords, we follow the sequence, major minor minor major major minor diminished.

Therefore, the chords in the key of B flat are Bbmaj, Cmin, Dmin, Ebmaj, Fmaj, G maj and Adim. These are three note chords or triads, but we can also form four note extended chords based on the B flat major scale. These chords are Bmaj7, Cmin7, Dmin7, Ebmaj7, F7, Gmin7 and Am7b5.

Let’s list all of these chords according to Roman numerals. Roman numerals indicate the position of each of these chords. Capital letters are for the major chords. These capital letters are I, IV and V. Small letters are for minor and diminished chords. These small letters are ii, iii, vi and vii°.

  • Chord I – Bb major (and Bb major seventh)
  • Chord ii – C minor (and C minor seventh)
  • Chord iii – D minor (and D minor seventh)
  • Chord IV – E flat major (and E flat major seventh)
  • chord V – F major (and F dominant seventh)
  • Chord vi – G minor (and G minor seventh)
  • Chord vii° – A diminished (and A minor seventh flat five)

Piano Chords In The Key Of B Flat Major

B-flat major

In the music theory, B-flat major is a major scale based on B♭, with pitches B♭, C, D, E♭, F, G, and A. Its key signature has two flats. Its relative minor is G minor and its parallel minor is B-flat minor.

Relative key: G minor

Parallel key: B-flat minor enharmonic: A-sharp minor

Dominant key: F major

Subdominant: E-flat major

Component pitches

B♭, C, D, E♭, F, G, A

G minor

G minor is a minor scale based on G, consisting of the pitches G, A, B♭, C, D, E♭, and F. Its key signature has two flats. Its relative major is B-flat major and its parallel major is G major.

Relative key: B-flat major

Parallel key: G major

Dominant key: D minor

Subdominant: C minor

Component pitches

G, A, B♭, C, D, E♭, F


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