Where Japanese musicians used to move to Tokyo for a shot at the big time, these days it feels like increasing numbers of them are heading to Berlin instead. Mayuko Hitotsuyanagi, better known by her dream-pop alias Cuushe, was one of them. In 2012, the Kyoto native embarked on a yearlong working holiday in the German capital, where she got a taste for the city's famous nightlife while producing her second album, "Butterfly Case."