Utada Hikaru is also a very young performer in the J-Pop world. Utada was born in the year of 1983, and her debut was landed in 1999, another young age singer, who is still a hit to Japan. She may not show up on TV often, but shows up in unexpected places, and her voice heard everywhere, even in video games like Kingdom Hearts.
There are also many bands out there in the J-Rock world like Asian Kung-Fu Generation, GLAY, BLEACH, and many, many more. Many of the bands and singers out in Japan sign up with famous dealers like Sony, Toshiba-EMI, and Island Def Jam. Some of the bands like GLAY and EXILE sometimes join together for a short while and make some albums together for more publicity.
Asian Kung-Fu Generation