Song Roulette A Vulture series in which artists share the stories and strategy behind their lead singles. “It wasn’t sexy for the radio to be playing artists that were on Radio Disney.” Photo-Illustration: Vulture; Photo: Jim Bennett/Getty Images Aly and AJ Michalka, better known by their alliterative stage name Aly & AJ , wanted to avoid a sophomore slump. It was 2007, and the sisters had already cultivated a groundswell of young listeners thanks to their involvement with the House of Mouse