The glide step, also commonly known as the "roll step," involves bringing the heel gently to the ground with the toe pointed up, and then rolling forward onto the toes before lifting the foot to continue forward. While marching to the rear, the weight is placed continually on the ball of the foot with the heel elevated. This style is used by both marching bands as well as drum and bugle corps. The style, in comparison to high step, gives drill formations a more fluid appearance, allowing for better control of more difficult formations and various styles of music. With this control also comes the ability to perform a much broader range of tempos. Proper execution of a roll step gives a player marching at 40 beats per minute the same smooth tone as a player marching at 180. The roll step allows for much better control of the upper body, and thus better control of the air support needed for playing.