What American music video director worked with the group previously known as 78violet?  
Chris Applebaum: Chris Applebaum is an American music video director, who has worked with a diverse range of artists, among them American Hi-Fi, Mariah Carey, Rihanna, Jessica Simpson, Jennifer Paige, Hilary Duff, Aly & AJ, The Mighty Mighty Bosstones, Mandy Moore, Natasha Bedingfield, Fountains of Wayne, Miley Cyrus, Demi Lovato, Selena Gomez and Britney Spears. Aly &amp; AJ: Aly & AJ, known briefly as 78violet (pronounced: "seventy-eight violet") are an American pop rock duo that consists of sisters Alyson Michalka and Amanda Joy Michalka.
i don't know