When I visited Dr. Henning Saupe at the Acadia Praxis during my travels across Europe to explore integrative cancer clinics, he introduced me to a form of sound therapy unlike anything I’d experienced before. His therapy room had massive gongs and brass bowls large enough to stand in. When he played them, the sound filled not just the room but my entire body. Dr. Saupe described how, during an immersive training, the resonance became so total that it pushed him into a trance-like, hallucinatory state—an experience where the sound left no room for ordinary thought. That session showed me how profoundly sound can quiet the mind. But as powerful as that was, the everyday version—the simple act of listening to music—can guide the nervous system in similar ways.

One place where the effects show up most clearly is in the autonomic nervous system, the balance between our “fight or flight” response and our parasympathetic “rest and digest” mode. Research consistently shows that calming, slow-tempo music can increase parasympathetic activity, lower stress markers, and improve heart-rate variability (HRV), one of the most reliable non-invasive indicators of vagal tone and stress resilience. A systematic review published in 2020 concluded that music could measurably influence cardiac autonomic function and generally shift it toward parasympathetic balance:

https://pubmed.ncbi.nlm.nih.gov/32379689

Other research has shown similar results. In one randomized trial, just 30 minutes of relaxing music per day helped pre-hypertensive young adults lower their systolic blood pressure and heart rate over a four-week period:

https://pmc.ncbi.nlm.nih.gov/articles/PMC8029898

Studies using specially designed “algorithmic relaxation music” have also found increases in cardiac vagal modulation—essentially a measurable nudge toward a calmer physiological state:

https://pmc.ncbi.nlm.nih.gov/articles/PMC9571939

Beyond cardiovascular markers, a 2021 overview in Frontiers in Psychology describes how both music listening and music-making can meaningfully influence autonomic tone, offering potential long-term benefits:

https://www.frontiersin.org/articles/10.3389/fpsyg.2021.727231/full

And a 2025 review in Frontiers in Immunology even points to early evidence that calming music may indirectly support immune function through stress reduction and increased parasympathetic activity:

https://www.frontiersin.org/articles/10.3389/fimmu.2025.1639047/full

What I appreciate about this field is that none of these benefits require specialized training, equipment, or a clinic setting. They show up at home, in the car, during rest, or as part of a daily routine. Many cancer centers have already integrated music therapy into patient care because of how reliably it reduces anxiety, improves mood, and eases fatigue. The Cochrane review on music interventions in cancer care summarizes these effects well:

https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.cd006911.pub3/full

And a more recent randomized study showed that even short music sessions can reduce anxiety and fatigue in patients undergoing treatment:

https://pmc.ncbi.nlm.nih.gov/articles/PMC11558607

Of course, music isn’t a one-size-fits-all tool. A piece that quiets one person may agitate another. Research shows that musical preference—more than familiarity—often predicts whether someone has a positive emotional or physiological response.

This makes intuitive sense. For some people, classical music or ambient soundscapes feel grounding. For others, jazz, film scores, soft electronic music, or even certain forms of rock or metal provide that sense of familiarity and emotional safety. The key is not the genre but the effect: slower breathing, easier exhalation, a subtle loosening in the shoulders, and the sense that the mind is no longer working quite so hard.

If there’s one practical takeaway, it’s that music remains one of the simplest, lowest-risk tools anyone can use to support the healing process. Aside from the obvious caution about volume—especially with headphones—there’s little downside. Whether it’s a massive gong in a German clinic or a quiet playlist at home after a long day, music can help guide the nervous system back toward safety, ease, and repair. It’s an ancient form of medicine that remains, even now, entirely accessible.

For anyone wanting to experiment, here are a few accessible starting points – Happy listening!

Playlists for Relaxation and Healing

• Relaxation Meditations:

• 50 Complete Relaxation Songs (album):