. Reference
'Music Visualization Source'
https://www.openprocessing.org/sketch/446535
https://www.openprocessing.org/sketch/192912
using p5.js and fft method to read Music, then compose the visualized image and Magnitude of frequancy. when selected music's Magnitude of frequancy is bigger than some constant number, run visual image. and by fixing these maximum number of visual image, it can show dynamic activity.