Probably due to the success of "Guitar Hero" UBISoft has licensed the Japan game "Hiite Utaeru DS Guitar M-06" and renamed it "Jam Sessions". I've had the Japanese version for almost half a year now, and it was always a challenge to play because the menus are in Japanese and it was tough to play along to popular Japanese songs I had never heard before.

But it sounds like they did a good job, licensed some interesting songs (Nirvana, Death Cab for Cutie, Blind Melon, Coldplay, and Bob Marley) and added a few new features (though it's possible I just never found those features due to the language barrier).