Hizaki Grace Project-- A really great band with Hizaki on guitar (obviously), Teru on another guitar, and Jasmine You as the bass.
YouTube - Hizaki Grace Project - Philosopher [PV]
Lareine-- A band with Kamijo as the vocalist. Just started getting into them, but it's really good. If you listen to some of their early music, it's really hard to believe that the singer is Kamijo!
YouTube - Lareine - Setsurenka PV
Jakura-- A band with Jasmine You as the bass player. I haven't found much on them yet...
YouTube - Jakura - Rojiura Gypsy
EDIT// I nearly forgot. Watch this vid, and pay special attention at 00:23 xDDD
Have you all been fortunate enough to get your hands on Lyrical Symphony? I have, it's great
