Zhuoren Education's Complete Works of Alpha Brain Wave Music is a good choice. Alpha brainwave music is music with a beat of 60-70 and a frequency of 8- 14 Hz. Its principle of action is to make the brain resonate through the music fluctuation of 8- 14 Hz, and adjust the brain waves to alpha brain waves working in the right brain, so that the brain is awake and relaxed, focused, emotionally stable and happy, and not easily disturbed by the outside world. The brain receives and transmits information through intuition, inspiration and imagination. Helps to develop the potential of the right brain.