Names of Japanese Music Artists?

Question

I am going to japan for a year and I want to know the name of some good popular Japanese music artists (so I can buy some CDs). Any genre of music is fine J-rock, J-pop, J-rap, etc.

also any insight about japan from expatriates or others who have spent a significant amount of time there will be most appreciated.

BTW I'm going to Osaka

thanks to all in advance!!!

Answer 1

dir en grey lolz.