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2![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
Brain Relaxation while Night (0,5 Hz-1,5 Hz)
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4![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
Focus on the Lessons (1 Hz-1,5 Hz)
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6![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
Alpha Waves for Preschoolers (10 Hz)
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9![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
0,5 Hz-1,5Hz Memorization
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11![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
Delta Waves for Teens (1 Hz-1,5 Hz)
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13![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
Natural Delta Waves (1 Hz-1,5 Hz)
14![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
Soothing Studying (0,5 Hz-1,5 Hz)
15![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
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