SleepHz

639 Hz: the frequency for connection

639 Hz is the solfeggio frequency for connection, traditionally linked to love, relationships and harmony with others. It's the fourth of the six original solfeggio tones, paired with the syllable fa. People play it during loving-kindness meditation or before a hard conversation. Play 639 Hz free below.

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What is 639 Hz used for?

Kaleidoscope artwork generated from the 639 Hz Connection frequency
639 Hz frequency, visualized. Every SleepHz artwork is generated from the frequency itself: its number sets the symmetry and the pattern.

639 Hz is used for relationships: feeling closer to a partner, family or friends, or easing tension before a difficult talk. It's a natural match for loving-kindness meditation, where you silently wish others well.

Where does 639 Hz come from?

639 Hz is paired with fa, from the line famuli tuorum (“your servants”) in the hymn Ut queant laxis. The hertz value is a modern assignment from the 20th century.

How to listen to 639 Hz

  1. Use a low, comfortable volume. A soft tone is easier to settle into than a loud one.
  2. Sit or lie down and slow your breathing to about six breaths a minute.
  3. Set Auto-stop for 10 minutes.
  4. Bring one person to mind and silently repeat: “May you be happy. May you be at ease.”

639 Hz vs 528 Hz

Both are called love frequencies. 528 Hz is about love for yourself and transformation; 639 Hz is about love between people. Try self-love affirmations with 528 Hz and loving-kindness with 639 Hz.

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639 Hz FAQ

Is 639 Hz the love frequency?

It's one of two. 639 Hz is linked to relationships and connection, while 528 Hz is linked to self-love and transformation.

Can 639 Hz help relationships?

A tone can't change a relationship on its own, but a calm few minutes with 639 Hz can help you approach people with more patience.

Do I need headphones for 639 Hz?

No. It's a pure tone, so any speaker works.