Những bài hát của ca sỹ "Ken Hirai"
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Omoigakasanarusonomaeni
Ken Hirai
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Kokuhaku
Ken Hirai
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Iwanai Kankei
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Yokogao (Original Karaoke)
Ken Hirai
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Memories
Ken Hirai
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Stay With Me (Original Karaoke)
Ken Hirai
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Life Is... Another Story
Ken Hirai
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Sentimental
Ken Hirai
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Time (Less Vocal)
Ken Hirai
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Precious Junk (Original Karaoke)
Ken Hirai
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Katahouzutsu No Earphone (Original Karaoke)
Ken Hirai
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Love Is Blind
Ken Hirai
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Kyouino Bonsai
Ken Hirai
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Katahouzutsu No Earphone
Ken Hirai
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Emmm...
Ken Hirai
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Aishiteru
Ken Hirai
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Introduction - Here Comes K. H. -
Ken Hirai
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orthodox
Ken Hirai
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Plus One
Ken Hirai
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Nonfiction
Ken Hirai