Take a mechanical pencil and a piece of paper. Approximately 1/3 of the page from the top, begin drawing a horizontal line from one side of the page to the other. Continue the line from right to left, left to right all the way to the bottom of the page, without picking up the tip of the pencil from the paper... The lines can be close to each other, gradually forming a horizon in front of you. Continue as long as you travel. With your ear, zoom in on the sound of the drawing.