You can get some mashups and Remix from DJ OGGY and APT UNDERLOUNGE.
http://www.supagooddjs.co.jp/djoggy/
I Get It In vs Go Dj
Carry Out vs Tie Me Down
Say Something vs Come Over
Drop It Low vs I Wanna Rock
American Boy (APT UNDERLOUNGE REMIX)
LALALA (APT UNDERLOUNGE REMIX)
Gangsta Luv vs Ain't No Fun
Right Round (APT UNDERLOUNGE REMIX)
WestCoast ClinicalTrials.
http://jp.wcct.com/blog/ (日本語ブログをまずはチェックしてみてください！！)
