Vasallo Crab 75 is a Tokyo rock band that is starting to attract a following with its color-filled, funky, pop-rock musical creations. I wrote about their most recent, heat-inducing show here.
And you can listen a few songs from their latest album, Breathe, at this page. (Click on the link in Japanese under the words 'Rainbow Entertainment' toward the top of the page.) The first two, Vicious Circle and Yellow Bird, are especially nice and worth a listen.