This video was taken in California, U,S,A. over several years spanning from around 2008 through 2013.   It is a time-lapse movie of clouds moving across the sky as they churn and merge. The video is divided into three sections, each with its own music. As the video progresses, the clouds get less stormy and menacing, becoming ever wispier. There is even one quick scene where the moon quickly moves across the blue sky, and clouds move in to cover it up. Compared to how we see clouds in 'real-time,' it is interesting how different clouds appear in time-lapse, where one can see tiny spirals of clouds and cloud-helices while the clouds' motions are accelerated. There are even different kinds of clouds at different altitudes, and some of the upper cloud layers cast shadows on the cloud layers below them. Due to the varying winds at different heights, some clouds move in one direction, while others move in almost the opposite direction.