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Hum drone - alpha - 205 Hz - 8 Hz alpha waves 2.
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Hum drone - beta - 110 Hz - 14 Hz beta waves 1.
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Hum drone - beta - 75 Hz - 15 Hz beta waves 1.
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Hum drone - alpha - 65 Hz - 11 Hz alpha waves 1.
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Solfeggio frequency - binaural - alpha - 639 Hz - 11 Hz alpha waves.
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Hum drone - beta - 90 Hz - 25 Hz beta waves 1.
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Hum drone - beta - 200 Hz - 14 Hz beta waves 1.
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Hum drone - alpha - 115 Hz - 10 Hz alpha waves 1.
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Solfeggio frequency - binaural - beta - 852 Hz - 23 Hz beta waves.
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Hum drone - alpha - 122 Hz - 8 Hz alpha waves 2.
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Hum drone - beta - 170 Hz - 23 Hz beta waves 2.
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Hum drone - alpha - 230 Hz - 12 Hz alpha waves 2.
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Hum drone - alpha - 75 Hz - 10 Hz alpha waves 2.
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Hum drone - alpha - 65 Hz - 11 Hz alpha waves 2.
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Hum drone - alpha - 81 Hz - 11 Hz alpha waves 2.
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