The B♭ Phrygian dominant scale has 7 notes: B♭ – C♭ – D – E♭ – F – G♭ – A♭. Phrygian dominant (Spanish Phrygian) is the fifth mode of harmonic minor: a major 3rd with a ♭2 and ♭6. It is the sound of flamenco, Middle Eastern melodies and many Bollywood songs.
B♭ and A♯ are the same pitch, so this page covers both names; the notes are spelled from B♭, the way the key is usually written. Compared with the B♭ major scale it has ♭2 (C♭ instead of C), ♭6 (G♭ instead of G), ♭7 (A♭ instead of A).
The explorer above is set to B♭ Phrygian dominant: the whole neck is mapped, and you can zoom into any of its 7 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.