ken hirai

Kokuhaku -less vocal- 

Kimi wa Tomodachi ~鍵穴~ 

Ojii san no tokei 

Brand New Bike 

Strawberry Sex 

Virtual Insanity (Jamiroquai cover) 

Boku ga Donna ni Kimi wo Sukika, Kimi wa Shiranai (Kusunose Seishiro cover) 

Tomorrow 

Taiyou 

Boku wa Kimi ni Koi wo Suru (rei harakami remix) 

air cameraman 

Fake Star 

Moon River 

Grotesque feat. Namie Amuro (グロテスク) 

What a wounderful world 

Onnaji Samishisa ~おんなじさみしさ~ 

Stay With Me 

Woman 

Grotesque (feat. Amuro Namie) 

Kimi no Kodou wa Kimi ni Shika Narasenai 

Boku wa Kimi ni Koi wo Suru 

Ken Hirai - Grotesque 

Highway Merry-Go-Round- 

Sore Demo Shitai ~ソレデモシタイ~ 

POPSTAR 

Unchained Melody 

Mahoutte Itte Ii Kana? ~魔法って言っていいかな?~ 

KIKYOGAOKA 

Non Fiction 

Boku no Kokoro wo Tsukutte yo 

LIFE is... ~another story~ 

Pop Star 

ABC (The Jacksons 5 cover) 

Kokuhaku 

Nonfiction (less vocal) 

Junko ~順子~ (Nagabuchi Tsuyoshi cover) 

愛してる 

Elegy 

HOTEL VAMPIRE 

Ite mo tatte mo ~いてもたっても~ 

Ost.I Give My First Love to You - Boku wa Kimi ni Koi wo Suru 

Shiroi Koibitotachi 

Heart Of Mine (Bobby Coldwell cover) 

signal 

Elegy ~less vocal~ 

Kokuhaku (OST Трагедия W)  

Ken Hirai - Morai Naki 

Aishiteru -less vocal- 

Life Is... 

Plus One