For Move to the Music's latest album "A little bit of Magic!" one of the stage costumes I imagine Melody Atherton wearing is a very vamp, fem-fatale dress. I knew that my mind was basing the dress off something but I couldn't put my finger on it. Then I realized I was remembering an outfit I'd seen in an anime series I'd seen in the last year or so ago, so I decided to do a bit more cosplaying with her to get feel for what wanted in her dress. I'll post the final idea later but ten points if you can identify the series and character.