Task: Explanation
Input (English): 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. They signed a recording contract with Hollywood Records in 2004. Their debut album, "Into the Rush", debuted at number 36 on the US "Billboard" 200, and was later certified gold by the RIAA. It has sold 839,000 copies domestically and 1 million worldwide. Their second album, "Insomniatic", peaked at number 15 on the "Billboard" 200, selling over 39,000 copies in its first week and becoming Aly & AJ's highest debut to date. Question: What American music video director worked with the group previously known as 78violet?   Answer: Chris Applebaum
Output (English): Aly  AJ, known briefly as 78violet pronounced: seventyeight violet are an American pop rock duo that consists of sisters Alyson Michalka and Amanda Joy Michalka.