Japanese pop

J-pop is an abbreviation for Japanese pop, but is also a loosely defined musical genre that entered the musical mainstream of Japan in the 1990s. It refers to Japanese popular musicians, and was coined by the Japanese media to distinguish Japanese musicians from foreign musicians. Today, the Japanese music industry is the second largest behind the United States in the world. The origin of modern "J-pop" is said to be Japanese-language rock music inspired by The Beatles. Unlike former Japanese popular music called kayōkyoku, J-pop used a special kind of pronunciation. For example, Keisuke Kuwata pronounced the word "karada" (body) as "kyerada". On the other hand, Taro Kato, a member of rock band Beat Crusaders, did not like it, saying that J-pop was not the encoded pop music but the pops music remembered by being aired many times.

Source : http://en.wikipedia.org/wiki/J-pop