639 Hz is a Solfeggio frequency that can help to connect with others. Some would also call it telepathy, psychic or supernatural abilities. Historically, the Solfeggio frequencies are also really interesting and date back to the 11th century!
When listening to frequencies, you should always drink enough water! The frequencies can be listened with speakers as well as with earphones.
Important Disclaimer: Frequencies should not replace medical treatment!
My Youtube Channel: https://www.youtube.com/@frequencymind
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