211.44 Hz is the frequency of Neptune, the most distant major planet in our solar system. Named after the Roman god of the sea, Neptune governs the boundless, the mystical, and the imagined — dreams, music, poetry, spiritual longing, and the dissolution of boundaries between self and other.

In sound therapy, Neptune's frequency is used to stimulate creativity, deepen intuition, and access meditative states that feel oceanic and expansive. It is particularly associated with artistic inspiration — the kind of ideas that seem to arrive from somewhere beyond conscious thought.

Neptune energy has a dissolving quality. Where Saturn builds walls, Neptune removes them. This makes its frequency useful for people who feel emotionally blocked, creatively stuck, or disconnected from their spiritual life. It is also used in sessions focused on compassion, forgiveness, and letting go of rigid self-definitions.