The sound can also be used around the ears for calming the mind. A full scale of sound is used but instead of being tuned for symphonic use they are tuned for the body, using Pythagoras' scale of sound (a scale also developed independently in China). There are also forks tuned to the sound of AUM which many patients find particularly soothing. Tuning forks can be used instead of acupuncture needles or in addition to them.