User blog comment:Aphrodite Sweetheart/Official Winx Club WOW and 4th movie discussion blog/@comment-24027341-20161028170434/@comment-5875378-20161028224405

I believe the voice actresses in Season 7 also play the Winx on WOW. I don't know about Musa though. She sounds different. Maybe Kate Bristol didn't want to voice her anymore.