I'm trying to find some good Japanese music, do you guys have any recommendations?! I've been studying the language a bit and want some good music to listen to! Thanks!

there's a lot. C:
but it depends on your taste i guess.

but here are some that i enjoy... not sure if you will?

BRIGHT:
shining butterfly
kotaba wa ni de kinakute
feelin' you
brightest star

Arashi:
truth
sakura sake
one love
love so sweet

KAT-TUN:
rescue
one drop
white x-mas
lips

NEWS:
koi no abo
happy birthday
cherish
hoshi wa mezashi.te

Morning Musume:
kanashimi twilight
resonant blue
mikan
onna ni sachi are

Ice Creamusume:
debut! ~koi suru kado ni wa fuku kitaru~

AAA:
samurai heart
let it beat!
q
blood on fire

Berryz Kobo:
seishun bus guide
rival

PERFUME:
twinkle snow powdery snow
ceramic girl

°C-ute:
massara blue jeans
forever love

Gazette:
cassis
filth in the beauty
reila

Dir en Grey:
raison d'etre
robot rock
obscure

Alice Nine:
rainbows
mirror ball
velvet

An Cafe:
snow scene
maple gunman
cherry saku yuuki

Utada Hikaru:
first love
sakura drops ft. D.A.I
passion
prisoner of love

NYC Boys:
NYC

Tamaki Nami:
heroine
shining star
realize


uh...i hope this can help you.
and sorry if it's so much. LOL.