Bb Phrygian

Character

The natural minor with the 2nd lowered a half step. It differs from minor by one note.

That flattened 2nd sits a half step above the root, and that half step presses down into the root. It is the dark colour Spanish music and metal both reach for.

A major chord appears on the second degree. That major arriving inside a minor progression is the Phrygian sound.

Change the third to a major third and you have the Phrygian dominant, which is more common in flamenco. That is not this scale — it is the fifth mode of the harmonic minor.

Scales with the same notes

This scale starts on note 3 of the F# Major Scale scale and contains exactly the same notes. The fretboard positions are identical, so a shape you already know carries over.

Diatonic chords in this key

Seventh chords built on each scale note, using only notes from the scale. These do not clash with one another, so they are the reference set when you build a progression.

Practice

It starts on the third note of its parent major scale. The hand shape is unchanged.

Alternate the root and the half step above it. Everything characteristic about Phrygian lives between those two notes.

Practise over a progression that only moves between the I and II chords and you will hear immediately why the scale exists.