Riyu Kosaka (小坂 りゆ（小坂 梨由）, Kosaka Riyu, born January 17, 1985) is a Japanese pop singer and lyricist. She is best known as a member of the Konami-produced Japanese teen pop girl group BeForU.
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BeForU
Japanese musical group
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Terra
j‑pop group
2
Monday Michiru
American musician
3
Naoki Maeda
Japanese composer
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Salyu
Japanese singer
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Sound Horizon
Japanese band
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La Bouche
band
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yuri
Japanese singer
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Utada Hikaru
Japanese-American recording artist (1983-)
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Morning Musume
Japanese girl group
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Cornelius
Japanese singer-songwriter, music producer, composer (1969-)
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Captain Jack
German Eurodance group
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Dreams Come True
Japanese pop band (1988 - )
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Koharu Kusumi
Japanese model, actress, television personality, singer, dancer and voice actress
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Maaya Sakamoto
Japanese actress, voice actress and singer
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Kosheen
band
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Nami Tamaki
Japanese pop singer
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Tetsuya Komuro
Japanese musician
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Sugizo
Japanese rock musician and music producer (1969-)