I HAS LIST. (from Japanese Wikipedia. i'll try to translate most of them into romaji...)
Spoiler:
UNIT SONGS
愛はいつも追いかけるモノ (Ai wa Itsumo Oikakeru Mono)
OH-E-OH! 太陽のSalsa! (OH-E-OH! Taiyou no Salsa!)
オリジナル・ブルー (Original Blue)
Six Groove
青天の霹靂 (Seiten no Hekireki)
[YOUTUBE] (PLZ TO IGNORE JIN'S HAIR)
Change
ツキノミチ (Tsuki no Michi)
DESTINY
DRIVE ME DRIVE ON
ど〜にかなるさ (Do~Nikanarusa)
ピカピカII (Pika Pika II)
FREAK OUT 〜Do me one time，Try me one night〜
Messenger
Le ciel 〜君の幸せ祈る言葉〜 (Le ciel ~Kimi no Shiawase Inoru Kotoba~) (Original Mix)
Rockin'
KAME SOLOS
離さないで愛 (Hanasanaide Ai)
夏の終わり (Natsu no Owari)
00'00'16〜sixteen seconds〜
JIN SOLOS
Hesitate
care
ha-ha (OMG....I WANT THIS IN HQ, PLZ. HAHAHAHAHAHAHAHA. i love it.)
ムラサキ (Murasaki) (....this one too. this one i
really love.)
PINKY
JUNNO SOLOS
ビバップ・タイム (Bebop Time)
夜明け前 (Yoake Mae)
誓心 (Seishin)
KOKI SOLOS
REAL7
King of HipHop road. R-16～to baby～
SHORTY
I DON'T MISS U
UEDA SOLOS (not including MOUSE PEACE solo set)
Love in snow (
)
Pieces
カキゴオリ (Kakigoori)
SPARKING
MARU SOLOS
Understandable
Shooting Star
MY WEATHER
Answer
Question
i haven't heard them all, tbh. xD
the only ones i care about are "Le ciel ~Kimi no Shiawase Inoru Kotoba~" & "Seiten no Hekireki". those needed to be released on "Best of KAT-TUN", tbh. or the 2nd disc on "cartoon KAT-TUN II You".
but...i want new songs on the album. i think it's too late to include a Junior song, tbh.
EDIT;; Karen, don't double post plz!
