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Sugai Hidenori 菅井英憲 Sugai Hidenori has been used as a vocal instructor by several pop artists in Japan including Morning Musume. Official Website |
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Vocal Instructor
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Sugai Hidenori 菅井英憲 Sugai Hidenori has been used as a vocal instructor by several pop artists in Japan including Morning Musume. Official Website |
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