Voice of Sirenix is Musa's Sirenix power which allows her to use her singing voice as a sonar that can break dark spells and communicate with sea creatures; or it can also be a beam of sound waves against the enemy.
Times When Used
- Season 5 Episode 20 - Used to free the Singing Whales from Darcy and Stormy's control.
- The Mystery of the Abyss - Used against the mutants but failed.
- Season 6 Episode 1 - Used along with Light of Sirenix and Fire of Sirenix against the Beast of the Depths.
- This spell is very similar to Crystal Voice as they both are solely dependent on Musa's voice and she sang a specific song when using both spells for the first time.