One of the most important things to consider when it comes to music is the effect on brainwaves and the body.
We know that the beats per minute and the type of beat used has an impact on the listeners heart rate, pulse and blood pressure, as well as the respiratory rate and organ functions.
http://www.scientificamerican.com/article/music-therapy-heart-cardiovascular/We also know that music can induce various brainwave states by rythmic oscillation of neural activity.
Delta wave – (0.1 – 3 Hz)
Theta wave – (4 – 7 Hz)
Alpha wave – (8 – 15 Hz)
Mu wave – (7.5 – 12.5 Hz)
SMR wave – (12.5 – 15.5 Hz)
Beta wave – (16 – 31 Hz)
Gamma wave – (32 – 100 Hz)
> 40 Hz Gamma wavesHigher mental activity, including perception, problem solving, fear, and consciousness
13–39 Hz Beta wavesActive, busy or anxious thinking and active concentration, arousal, cognition, and or paranoia
7–13 HzAlpha wavesRelaxation (while awake), pre-sleep and pre-wake drowsiness, REM sleep, Dreams
8–12 Hz Mu wavesMu rhythm, Sensorimotor rhythm
< 4–7 Hz Theta wavesDeep meditation/relaxation, NREM sleep
< 4 Hz Delta waves Deep dreamless sleep, loss of body awareness
>Binaural beatsBinaural beats, or binaural tones, are auditory processing artifacts, or apparent sounds, caused by specific physical stimuli. This effect was discovered in 1839 by Heinrich Wilhelm Dove and earned greater public awareness in the late 20th century based on claims coming from the alternative medicine community that binaural beats could help induce relaxation, meditation, creativity and other desirable mental states. The effect on the brainwaves depends on the difference in frequencies of each tone: for example, if 300 Hz was played in one ear and 310 in the other, then the binaural beat would have a frequency of 10 Hz.
https://en.wikipedia.org/wiki/Binaural_beatshttps://en.wikipedia.org/wiki/Brainwave_entrainmenthttps://en.wikipedia.org/wiki/Neural_oscillationhttps://en.wikipedia.org/wiki/Monaural_beatshttps://en.wikipedia.org/wiki/Isochronic_tonesAll of these techniques have one thing in common, they are frequencies.
Tonal frequencies, vibrations, electromagnetic frequencies, light flickering, etc.
Tesla was right when he said that the universe is nothing but energy, frequencies and vibrations.
The manipulation of which can manipulate human beings.