From Music and More : http://www.ongakusai.net/mm_new/
April 02
aiko - album - “himitsu”
aobozu - album - Forestone”
doa - single - “Glass no Highway”
Kaela Kimura - album - “+1″
Kato Miliyah - album - “TOKYO STAR”
L’arc~en~Ciel - single - “DRINK IT DOWN”
Oohashi Takuya - single - “Arigato”
Saori@destiny - single - “Sakura”
Sawaki Maika - debut single - “believed”
Shimamiya Eiko - album - “Hikari Nadeshiko”
Sukima Switch - album - “Sukima Switch Arena Tour ‘07′ W-ARENA’”
April 08
Hamasaki Ayumi - single - “Mirrorcle World”
April 09
175R - single - “Omae wa Suge!”
An Cafe - album - “Gokutama Rock Cafe”
BRIGHT - single - “Sorairo”
ET-KING - single - “Saynara Mata ne”
Hinouchi Emi - single - “Ai dake ga”
Home Made Kazoku - single - “EASY WALK”
melody. - album - “Lei Aloha”
My Little Lover - single - “Initial”
nobodyknows+ - single - “Under Rain”
Plastic Tree - single - “Alone Again Wonderful World”
Sowelu - album - “Naked”
Tokunaga Hideaki - single - “Dakishimete Ageru / Hanatabi”
YUI - album - “I LOVED YESTERDAY”
ZARD - single - “Tsubasa wo Hirogete / Ai wa Kurayami no Naka de”
April 16
12012 - single - “MERRY GO WORLD”
ACIDMAN - album - “Life”
B’z - single - “Burn -Fumetsu no Face”
Fukuhara Miho - single - “CHANGE”
haru - single - “I Miss You / Message ~ashita no boku e~”
Hirahara Ayaka - single - “Kodoku no Mukou”
HY - album - “HeartY”
Ikimonogakari - singe - “Kaeritaku Natta yo”
KEY GOT CREW - single - “Boku no Chikara”
LAST ALLIANCE - single - “Always in My Heart”
Merry - single - “Tozasareta Rakuen”
Morning Musume - single - “RESONANT BLUE”
Perfume - album - “GAME”
RIZE - album - “K.O.”
Shimamiya Eiko - single - “Wheel of Fortune”
Sweet Vacation - album - “More the Vacation!!”
Takasugi Satomi & Tatsuya Ishii - single - “Maho no Kagi ~The Dream Goes On”
Wonder-holic - single - “After the rain” - Debut!
Yuzu - album - “Wonderful World”
April 23
Ayuse Kozue - single - “Koyoi kimi ni koi wo shite”
BENNIE K - album - “Best of The Bestest”
Biyuuden - single - “Nanimo Iwazu ni I LOVE YOU”
C-ute - single - “Namida no Iro”
Hata Motohiro - single - “Kimi, Meguru, Boku”
Fujimoto Miki - single - “Okitegami”
Kalafina - single - “Re/Oblivious” (remix single)
KAT - single - “Stop”
Kiyokiba Shunsuke - single - “Ima.”
mink - album - “mink II ~endless love~”
misono - single - ‘ninin sankyaku”
MONKEY MAJIK - single - “Together / Akari / Fall Back”
Nishino Kana - single - “glowly days”
PENICILLIN - single - “Taiyo”
POLYSICS - album - “We Ate The Machine”
SHOWTA. - single - “Hikari no Gen Chan”
Takaoka Ai - single - “Gomen ne, Ima demo suki demasu”
Tamaki Nami - album - “Don’t Stay”
Tohoshinki - single - “Beautiful You / Sennen Koiuta”
TRF - album - “Complete Best Life from 15th
Anniversary Tour -Memories- 2007″
TRF - single - “Live Your Days”
Yamada Yuu - single - “Untitled”
w-inds. - single - “Ame Ato”
WaT - single - “Tokei wo Koete / Fantastic World”
April 30
ARIA - single - “Departure feat. AK-69 / Harmonize feat. Kallassy Nikoff”
Ikegami Kei - single - “Hitohira, Futahira”
KANON - single - “Wings To Fly”
KCO - album - “O-CRAZY LUV”
mihimaru GT - single - “Girigiri Hero”
MilkyWay - single - “ANATA BOSHI” - Debut!
Misia - single - “Yes, Forever”
Nao’ymt - album - “Nao’ymt WIT’ - 1st Season”
Rurutia - mini-album - “Hyousa”
Tanaka Roma - single - “Boyfriend / Girlfriend feat.melody.”