136.1 Hz is believed to be associated with Om which refers to as sound of the Universe or Soul. From very ancient times people practice om chanting for meditation to achieve enlightenment. Scientific studies also proved that there are many benefits for chanting om on a regular basis.
Here om frequency 136.1 Hz is modulated with many ultra low frequencies starting from 0.5Hz for a smooth and sweeping effect. It is modulated in the binaural way so headphones are compulsory. It is in the deep delta range which will take brain to a very relaxed and sleep like state for ultimate relaxation and meditative experience.