Guitar Chords in the Key of B Flat (B♭) minor

The chord formula for any minor key is minor, diminished, Major, minor, minor, Major, Major.

The chords in the key of B flat minor are B♭ minor, C diminished, D♭ Major, E♭ minor, F minor, G♭ Major, and A♭ Major.

A common way to number these chords is by Roman numerals: I, ii, iii, IV, V, vi, vii. Numerals that represent a major chord are usually capitalized, and minor and diminished chords are lower case.