Bb Harmonic Major Scale

What is the Bb Harmonic Major Scale?

The harmonic major scale is a regular major scale with a lowered 6th degree (♭6), which injects a surprising dark twist into an otherwise bright tonality. It's less common than harmonic minor but appears in film scoring and advanced jazz harmony whenever a composer wants "major but unsettled." Here's how the Bb Harmonic Major Scale lays out on the fretboard. This scale is enharmonically equivalent to A# Harmonic Major.

Notes and Positions

Major scale with a flat 6th; rich for modulation. On bass, this scale becomes a toolkit for strong roots, passing tones, and melodic fills that still support the groove. Think in root-on-E and root-on-A boxes, then adapt the same notes for 5-string bass when the low B string gives you another root below the pattern. In the key of Bb, the notes are: Bb, C, D, Eb, F, Gb, A.

How to Use It

You'll often hear it in Jazz, Film, and Classical. A good way to internalize the sound is to sing the root, then sing a few scale degrees before you play them.

Build two-bar bass lines that return to the root before experimenting with wider melodic movement. Use the interactive fretboard above to spot repeats of the same note on different strings and frets.