James Halbert: Low frequency music slows heart rate and decreases sympathetic activityHalbert, J. D., van Tuyll, D. R., Purdy, C., Hao, G., Cauthron, S., Crookall, C., ... & Kapuku, G. K. (2018). Low frequency music slows heart rate and decreases sympathetic activity. Music and Medicine, 10(4), 180-185.