The video describes the effect known as the Boomerang Scratch. The author describes the technique and shows the sheet musical note equivalent. After explaining the sheet music notation, the author shows a video of the technique being performed on a scratch deck with a cross fader. The video then covers volume levels as indicated on sheet music and how to read these notations. This video provides a few different examples of the boomerang scratch along with close-up videos of the authors and hands controlling the scratch deck and line fader.