Amazon Musicで、音楽やポッドキャストを無料でストリーミング再生しよう。 お支払い登録不要。無料で聴く 1
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Brain - Increase IQ with Music
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Absorption - 1 Hz Frequency
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Diligence - Focus Activation
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Center - Increasing Memory
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10 Hz Frequency (Attention)
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Engage - 100% Brain Usage
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Study Vibration Frequency
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Determination - Study Aid