1 year agobeta_brainwaves_focus_11Hz__brainwaves_ _FocusWhilelearning_ _focus_17096106651118395TechSphere
1 year agobeta_brainwaves_focus_13Hz__FocusWhilelearning_ _Betasounds_ _Focusing_1709774578872227TechSphere
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1 year agobeta_brainwaves_focus_6Hz__Betasounds_ _FocusWhilelearning_ _studyfocus_17095421071262214TechSphere
1 year agobeta_brainwaves_focus_20Hz__FocusWhilelearning_ _betawaves_ _Focusing_1708977353.509712TechSphere
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1 year agobeta_brainwaves_focus_20Hz__studyfocus_ _betawaves_ _FocusWhilelearning_1708830415.1194878TechSphere
1 year agobeta_brainwaves_focus_28Hz__studyfocus_ _brainwaves_ _FocusWhilelearning_17096660821835308TechSphere
1 year agobeta_brainwaves_focus_17Hz__betawaves_ _Betasounds_ _brainwaves_17096605374953947TechSphere