Not numbered or structured in any way, but my own list of notables after looking over most of the stuff I got this year.
Most remixed song:
もってけ!セーラーふく - by about the 10th remix I became fully addicted to the song without ever having heard the original. By the 15th remix it became pretty much permanently embedded in my brian. What is it with j-core artists and that track...
Happiest album:
DE DE MOUSE - tide of stars SPECIAL EDITION. It's not hyper or anything, but something about the frequencies used and the contruction of it just makes me happy.
Best glitch-tech/house/hip-hop:
Tie between Modeselektor - Happy Birthday! and Simian Mobile Disco - Attack Decay Sustain Release. Both are severely good.
Sexiest album cover:
ミドリ - 清水
Best jazz violinist that was nice enough to move out of Japan to somewhere only a couple hours away from me:
Sarina Suno.
Best fake animated DJ created to promote an A-pop compilation:
DJテラ
Best Bossa Nova album in Portuguese from a Japanese singer:
小野リサ - The music of Antonio Carlos Jobim "IPANEMA"
Best collaboration with a fat white rapper:
ARIA - NOT OVER feat. HOKT & BIG RON
Most hilariously bad attempt at foreign language singing:
Avril Lavigne - Girlfriend - 08 - Girlfriend (Mandarin Version)
Best cheesy eurobeat:
Tie between Fright Ranger - Oh Oh Oh Sexy Vampire (JUSTiNB's Video Edit) and Becky - Less Than Three (JUSTiNB's Hardcore Electrotron Remix)
Best song written by 野宮真貴 this year:
Halcali - Limited Edition - 03 - Girl! Girl! Girl!
Best hot bitches:
Tie between Hot Bitch Arsenal and HOT BITCH'S MARIE.
Best song about the Teletubbies:
Kiiiiiii - KK-LaLa
Best indie JPop street artist:
mimika. Why hasn't she been signed yet?
Best 8bit anime cover song:
momo-i - ファミソン8BIT STAGE2 - 08 - アタックNO.1のテーマ
Best weird album from an artist that used to be really generic and suddenly turned interesting:
MOON-香奈-kana- - 月の兎-tsuki no usagi-
Best Chinese indie pop album:
PixelToy - O…OH
Best band that actually released several full CDs this year with 及川リン singing vocals instead of making me have to get 1 or 2 tracks each from several different soundtracks produced by her friends to hear her voice:
Q;indivi
Best hiphop album produced by Trent Reznor and released for free on the internet:
Saul Williams - The Inevitable Rise and Liberation of NiggyTardust!
Best mini-CD for Bemani fanboys:
teranoid - teranoid underground edition for DJ'S ONLY BLACK
I ♥ Mayu and Rina:
THE PINK☆PANDA - Wake Up - 02 - Crazy Girl Crazy Days
Album that got the most popularity because of the singer's suicide:
U;nee - Habit
Most amusingly bad cover album:
Dance Dance Revolution HOTTEST PARTY Original Soundtrack
Best Thai cover album of a Japanese group:
Flipper's Players
Happiest song title:
源屋 - Love Honey Sweet Angel (happy remix)
Shiniest Trance album:
Trance Super Shiny
Best Jazz/Enka/60s vibe:
倉橋ヨエコ - 色々
Best fairy music:
妖精帝國 - GOTHIC LOLITA PROPAGANDA
Best album that for some strange reason goes well with 久住小春's ☆☆☆
Yoko Ono - Yes, I'm a Witch