The D♭ Phrygian dominant scale has 7 notes: D♭ – E𝄫 – F – G♭ – A♭ – B𝄫 – C♭. 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.
D♭ and C♯ are the same pitch, so this page covers both names; the notes are spelled from D♭, the way the key is usually written (a double sharp or flat is the correct spelling for that degree). Compared with the D♭ major scale it has ♭2 (E𝄫 instead of E♭), ♭6 (B𝄫 instead of B♭), ♭7 (C♭ instead of C).
The explorer above is set to D♭ 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.