Talk:Problem/@comment-4200146-20141026030059/@comment-25357684-20141226035859

Lol, Master. He said:

"The background follows the instrumental sounds of the song. For example: when the saxophone plays, lines (he meant the color bars) appear or when Iggy starts singing, the circles appear following each beat. It's like this in the whole song"

That's why Harley said on the trivia, "Some elements of the background, like the flashing lights, follow the beat of the song"