I've only been following Kageyama's career for a couple of months, but I can safely say that she's one of the most interesting artists I've come across in a long while.
Kageyama Risa hails from Shizuoka Prefecture, Japan and has been releasing music since 2007. Interestingly, she's released 24 singles, Jellyfish being the latest, but only two albums so far. That said, she's released quite a few singles during recent months, so one assumes that her third album can't be very far off.