Sonic Screen

Sonic Screen is a Believix defensive/offensive spell used by Musa, in which she either summons a blue and red colored shield or launches dark pink sounds waves at the enemy.

Series

 * Season 4 Episode 9 - Used twice; first to defend herself, then used in a convergence spell to get Roxy back from Nebula's control.
 * Season 5 Episode 2 - Used against the Trix.
 * Season 5 Episode 6 - Used to defend herself, Stella, and Tecna.

Comics

 * Issue 88 - Used to defend herself.
 * Issue 95 - Used to defend Flora and herself.
 * Issue 101 - Used to defend Bloom, Mitzi and herself.
 * Issue 102 - Used to defend the Winx.