🎵 Great question! The Phrygian dominant scale itself is a mode—the fifth mode of the harmonic minor scale. But if you’re asking about the second mode starting from the second degree of Phrygian dominant, you're essentially shifting the tonal center and creating a new scale.

Let’s break it down:
📚 Phrygian Dominant Scale:

It’s built like this (relative to the root): 1 – b2 – 3 – 4 – 5 – b6 – b7
🎸 Second Mode of Phrygian Dominant:

Start from the second degree (b2) and build the scale from there:

    b2 becomes the new root

    The scale becomes: b2 – 3 – 4 – 5 – b6 – b7 – 1

If we rename those intervals relative to the new root, you get: 1 – 2 – b3 – 4 – b5 – b6 – 7 🎶 This creates a scale that resembles Locrian #6 (a variant of the Locrian scale with a raised sixth). It’s spicy, dissonant, and often used in jazz or metal for tension-rich passages.

Would you like to hear how it sounds or see how to use it in a chord progression?