The Japanese music industry is one of the largest in the world, with a highly developed market and a wide range of genres. J-Pop (Japanese Pop) and J-Rock (Japanese Rock) are two of the most popular genres, with many artists achieving huge success both domestically and internationally. Some notable Japanese musicians include Ayumi Hamasaki, Utada Hikaru, and X Japan. The industry is also known for its idol groups, such as AKB48 and Morning Musume, who have gained a massive following among young fans.