Make the world free from anxiety

Yes. Multiple authoritative studies support the positive role of music in sleep:

Nature Scientific Reports (2019) found that relaxing music can increase deep sleep, or slow-wave sleep, by up to 46%.

Frontiers in Neurology (2024), summarizing 27 studies, found that music significantly improves subjective sleep-quality scores.

Brainwave audio in specific frequency bands, such as delta and theta, can help the brain transition from wakefulness toward deep sleep.

Music supports sleep through several physiological pathways, including lowering sympathetic arousal, guiding slower brainwaves, and supporting melatonin secretion. It is recognized in sleep medicine as one form of non-drug supportive intervention.

Music is often useful for three common sleep situations:

Psychological insomnia: racing thoughts, stress, and the harder-you-try-the-harder-it-gets pattern. This is the most common use case and where music is often most effective.

Environmental disturbance: waking easily from noise or struggling to sleep in noisy or unfamiliar places. White noise and nature sounds can help mask interruptions.

Circadian disruption: jet lag or staying up late until you are exhausted but still unable to sleep. Rhythmic sound can help the body resynchronize.

White noise and nature sounds mainly provide sound masking: a steady background covers sudden environmental sounds, reducing how often the brain is activated by unexpected noise. They suit people who wake easily, sleep in noisy environments, or need help maintaining sleep depth.

Sleep music uses melody, rhythm, timbre, and brainwave frequencies to guide the nervous system into relaxation and deeper sleep. It suits people who struggle to fall asleep, cannot quiet their thoughts, or need help transitioning from wakefulness to sleep.

They can also be combined: use sleep music to fall asleep, then white noise to support sleep continuity through the night.

Focus music is designed around entering and maintaining a focused state. It usually has no lyrics, so language does not interfere with working memory; the rhythm stays stable; the dynamic range is controlled so there are no sudden loud or quiet passages; and the structure avoids emotional peaks that can pull attention away. Ordinary background music does not necessarily account for these factors, so a chorus or dramatic section may suddenly capture attention during work.

Relaxation music helps you cool down from tension into a calm but awake state. It works well after work, before meditation, or during a bath, while you are still conscious and present. Sleep music goes further toward sleep, with slower tempos, lower frequencies, and less stimulation. Simply put: relaxation music helps you move from 100% to 40%; sleep music helps you move from 40% to 0%.

White noise: energy is evenly distributed across frequencies, sounding like the hiss of a TV with no signal. It is useful for masking high-frequency noise such as keyboards or speech, especially for light sleepers or noisy environments.

Pink noise: high frequencies are gently reduced, so it sounds softer and fuller than white noise. Rainfall and wind through leaves are natural forms of pink noise. It often suits sleep and everyday focus.

Brown noise: energy leans strongly toward low frequencies, removing sharpness. It can sound like distant thunder, a waterfall, or deep ocean movement. It often suits deep relaxation and anxiety relief.