how do horns and drums in a marching band make sounds? musicians blow into the horns and cause columns of air to vibrate . or they hit a drums surface to make it vibrate. the vibrations spread out through the air in all directions as sound waves the sound waves keep going until they hit something in this case your ear
your outer ear catches the sound waves and directs them into your ear your eardrum starts to vibrate this in turn makes other parts in you ear vibrate your ear changes the vibrations into electrical signals that travel along near to your brain your brain interprets the signals as sound.