Again I will recommend L'Arc~en~Ciel. Best music and best guys ever! Their songs have so much variety. Here are some with Youtube links:
Driver's high - This PV is looove XD
Kasou - Hyde looks scary but the song is one of the best!
New world - Amazing.
AND their soloprojects. Great. Some recommendations:
HYDE - Season's call (The lead singer's soloproject)
Ken - Speed (PV from the guitarist's new solosingle just released today!)
TETSU69 - TIGHTROPE (Tetsu is my favourite member, the leader and the bassist. This is from his soloproject couple of years ago.)
Sorry I don't have download links or anything, but if you're interested, I can upload something. If you find somewhere else, I'd recommend L'Arc albums Awake (2005) and ray (1999) - these are the best ones imo!