Artist Name
Official site(Official web page)
Fan's site(Unofficial web page)
Hit Song List
2004 's hit ********** To your town (Kimi no machi made) Song data (in Japanese) 2004 's hit ********** Rewrite Song data (in Japanese)

=> How to buy hit song's music CD
You can easily buy music CDs on internet. You can also buy USED music CDs.
Jpop Hit Song Blog
=> Go to (in Japanese)
This blog contain information of popular singer, song writer, and musician who is active (or was ever active) in Japan.
Jpop Topic
P2P file exchange software is popular in Japan. File (mp3 music file/wma file) of music seems to circulate in that. P2P software to be famous in Japan was Winmx and Winny, but both seem to have been to stop service formally recently.
Jpop hitsong -top page-