Release Tension & Sleep Deeply | 174 Hz Deep Sleep Frequency Music (10 Hours)

Ten hours of pure 174 Hz... the lowest solfeggio frequency, often associated with deep rest and physical relaxation as a real and sustained sine wave. A gentle ambient drone sits underneath... the tone leads. This is the 'sleep all night' video. Start it when your head hits the pillow and wake up when it ends. Headphones or a speaker at moderate volume recommended. The black screen is intentional. No visuals. No light. Built with the same process as the 8-hour sleep-cycle video. Real frequencies and no fake labels.