Any good J-Pop bands অথবা artists for beginners?

I've been a diehard জীবন্ত অনুরাগী for a long time now so I sort of gained interest in Japanese সঙ্গীত too. Really, I've only been listening to Kyary Pamyu Pamyu and VOCALOID, and I'd really like to try branching out my interests, so any suggestions? I'm a pretty big অনুরাগী of সঙ্গীত with a beat, techno music, dubstep music, basically anything that gets আপনি pumped, but I'd be willing to try other things!