144 Hz
Sessions built around a 144 Hz tone, layered with soft ambience so they are easy to leave running.
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Common questions
What is a 144 Hz tone?
It is a pitch of 144 cycles per second, a low tone in the range of the musical note D3. Listeners use it as a calming background sound.
How long should I listen?
As long as you like. These sessions run from about an hour to several hours, so you can leave them playing.