Weighted tuning forks are tuning forks with small weights added in order to emit a stronger level of vibration for use directly on the skeletal parts of the body. These have been designed to emit specific and stronger vibrations known to facilitate healing through a number of processes such as facilitating nitric oxide release.

Unweighted tuning forks can be used to facilitate brain entrainment through use of specific tones and frequencies. Human hearing generally ranges from 20 to 20,000 hertz. Lower hertz levels such as sounds below 20 hertz i.e. the hertz level of the brain in more relaxed states are below the level of human hearing. Auditory perception of lower hertz tones can be created using specific tones. When two very similar frequencies are placed close to the ears a pulsing sound is heard. This pulsing sound is the difference or differential between the two frequencies. If one of the frequencies is 300 hertz for example and the other tone is vibrating at 307 hertz, the brain will perceive or create this third sound or beat. This is known as a binaural beat. In this example, the binaural beat would be 7 hertz and the beat to which the brain may begin to entrain with, (to match) or resonate with. 7 hertz is the hertz frequency of brain wave state when in relaxed alpha/theta state. Use of binaural beats as first developed by the Monroe Institute also facilitates synchronization between the hemispheres of the brain which function best when working together helping us to access all aspects of ourselves. Binaural beat technology enables hertz frequencies that are normally below the level of human hearing range to be percieved and to facilitate entrainment with. Facilitating brain wave frequency changes  to a lower hertz range is useful in that it encouages the brain to vibrate at levels that are generally experienced when in relaxed alpha and theta states which would in terms of sound be below the generally 20 hertz audible sound frequency range

Wider musical intervals can also be used and have been shown to facilitate various feelings and effects within the brain. Harmonic intervals such as that of the perfect fifth in the form of C and G have been shown to facilitate a plethora of healing benefits when used in this way. These include lowering blood pressure, improving mood, immune system strengthening and balancing of sympathetic and parasympathetic nervous systems. Dissonant intervals can be used to encourage release of stagnant energy. Various tuning fork protocols which include harmonic and dissonant intervals as created by sound pioneer John Beaulieu have been created to facilitate a number of healing benefits. These protocols include interval sequences that are designed to aid quality sleep, increase in creativity, calm anxiety, improve digestive balance and promote feelings of being grounding to name but a few. These protocols as outlined in John Beaulieu's book entitled "Human Tuning" are fairly comprehensive in terms of emotional issues that can be addressed. I find tuning forks particularly useful when carrying out 1 to 1 sessions. The nervous system balancing protocol used for facilitating general relaxation and in fact all of the possible listed protocols appear to yeild fairly rapid results in terms of aiding greater levels of relaxation. My own observations and feedback from clients have confirmed that use of tuning forks appears to be an effect mode of sound therapy. I generally incorporate use of them with 1 to 1 clients unless the client states an aversion to this type of sound.