What is the fine-grained topic of the following text: Kid Sister’s IRL big bro, DJ J2K, has, as one half of Flosstradamus, spent the past couple years pushing their aggressive rap-EDM fusion to larger and larger audiences, but her own neo-hip-house has been better for longer. Only return the topic.
DJ J2K and Kid Sister's music careers in rap-EDM and neo-hip-house genres.