Những bài hát của ca sỹ "Ken Hirai"
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Shiroi Koibito Tachi
Ken Hirai
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Half of Me
Ken Hirai
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Aoi Tori
Ken Hirai
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Sentimental
Ken Hirai
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Gift
Ken Hirai
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Don't Kan Don't Koi
Ken Hirai
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Miracles (Less Vocal)
Ken Hirai
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Shiranaindesho?
Ken Hirai
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Kokuhaku
Ken Hirai
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Blanket
Ken Hirai
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Sing Forever
Ken Hirai
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Life Is... Another Story
Ken Hirai
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Plus One
Ken Hirai
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Why (Less Vocal)
Ken Hirai
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Emmm...
Ken Hirai
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Ladynapper
Ken Hirai
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Mahoutte Itte Iikana? (Ken's Bar 2017 X'mas Special Live!!)
Ken Hirai
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Heat Up (Backing Track)
Ken Hirai
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Iwanai Kankei
Ken Hirai
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Kimiwa Tomodachi
Ken Hirai
