A sparkler is attached to a metronome. As the metronome pendulates side to side it moves the sparkler side to side as well. As the sparkler burns down, losing height, the flame creates a zig-zag of light in this long exposure photograph. The zig-zag pattern has been broken though. During the long exposure the artist moved his hand in front of the lens of the camera to the beat of Led Zeppelin's song" When the Levee Breaks". The breaks in the pattern indicate the moment at which the hand momentarily blocked the light of the sparkler from exposing the film.