Chords in the Key of Bb Minor

Diatonic triads

Seventh chords

Stack one more scale tone on each triad and you get the seventh chords — same key, more color.

Common progressions in Bb minor

• i–VI–III–VII

  Bbm – Gb – Db – Ab

  The minor pop loop — same four chords as the major axis, started from the minor side.

• i–iv–v

  Bbm – Ebm – Fm

  The minor blues shape — all three chords stay minor in the natural scale.

• i–VII–VI

  Bbm – Ab – Gb

  The descending rock lament, one whole step at a time.

• i–iv–VII–III

  Bbm – Ebm – Ab – Db

  A circle-of-fifths descent — each root falls a fifth to the next.

How the key of Bb minor works

Bb Minor carries five flats (Bb, Eb, Ab, Db and Gb). The scale runs Bb–C–Db–Eb–F–Gb–Ab, and stacking every other note of that scale builds the seven chords above — every chord tone comes from those same seven notes.

Db Major is the relative major: identical key signature, identical seven chords. Treat Db — the III chord here — as home base and you are in Db major without changing a note.

The parallel major, Bb Major, keeps the same root but raises the third, sixth, and seventh — its signature shifts to two flats (Bb and Eb). Moving a section from minor to parallel major is one of the oldest brightness tricks in songwriting.

Playing Bb minor on guitar

None of the chords in Bb minor is a standard open chord: Bbm, Db, Ebm, Fm, Gb and Ab all need barre shapes, which is why most guitarists reach for a capo in this key. The diminished Cdim is usually played as a small three-string shape rather than a full chord.

A capo is the shortcut. With one, the i–VI–III–VII progression (Bbm – Gb – Db – Ab) sounds in Bb minor while you finger open shapes:

• Capo 6 · play it as E minor

  Em – C – G – D

  4 of 4 shapes are open chords.

• Capo 1 · play it as A minor

  Am – F – C – G

  3 of 4 shapes are open chords.

• Capo 4 · play it as F# minor

  F#m – D – A – E

  3 of 4 shapes are open chords.

Work out a capo for any song's chords

Where Bb minor sits on the neck

The root, Bb, is fret 6 on the low E string and fret 1 on the A string, the two places most minor barre shapes and scale positions in Bb minor are built from.

None of the six open strings belongs to Bb minor: every note is fretted, and any open string you brush by accident will sound out of key.

One note separates Bb minor from each neighbour on the circle of fifths. Raise Gb to G and you are in F minor; lower C to Cb and you are in D# minor (usually written with the enharmonic spelling). Those are the two keys a song in Bb minor most often modulates to.

Keep practicing

• Practice the Bb minor scale on the fretboard
• Jam these progressions over a backing track
• Transpose a song into or out of Bb minor