i would recommend -
CHEMISTRY - nice ballads, some poppish (though not overly) songs, just overall relaxing to listen to.
YUI - new artist! only two singles so far (feel my soul, tomorrow's way) but BOTH are very nice. mainly acoustic guitar type songs, but they're awesome!
Every Little Thing - i just got into these guys like after what 9 years after their debut? haha but they're still great. guitarish songs, just overall really good. every best single 2 is a nice album
ryohei yamamoto - somewhat new (only one album), but he's pretty good (yet so underrated!). very nice soothing voice, and a soul/r&b/pop style.
hope those help. AND DEFINITELY GET NAMIE'S QUEEN OF HIP-POP! it's an awesome album; i like pretty much every song (esp. "want me, want me" and "no").
