Everytime I go to comic conventions, people often asked me what kind of music I listen to.
Kids who asked me this quetion usually listen to famous J-pop music, they said.
Unfortunately I really don't know latest J-pop music at all... I'm old--!
I'm a person who is still stuck in "Shibu-kei" "Frenchi Popish" music.. If you have never heard those musicians, please check them out--!! Some songs are pretty catchy. It's nice BGM for me.

Phony Phonic by Capsule

Perfect Joke by Copter4016882

Nagisa Cosmetic
*Capsule and Nagisa Cosmetic are produced by a same guy. I guess he WAS making those cutie music.

Pop go the happy tune by Melting Holiydas

Yukari Fresh

Fakevox by Plus-Tech Squeeze Box
Those music are not mainstream music at all, but once you like them you will find musicians who make similar style music by chekcing their label companies.
I used to listen to Hip Hop, DJ music a lot until I met Kuririn. He is an Music Otaku boy. Thanks to him, I found a lot of off-beat J-pop!