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MP3 1. KlangTherapy - 13Hz - Concentration (216Hz)
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MP3 2. KlangTherapy - 17Hz - Focused Attention (216H
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MP3 3. KlangTherapy - 20Hz - High-Level Cognition (2
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MP3 4. KlangTherapy - 25Hz - Analytical Thinking (21
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MP3 5. KlangTherapy - 29Hz - Problem Solving (216Hz)