Use the attack where Mario uses fire on Luigi from behind, or where Luigi uses thunder on Mario from behind. Do it so that you crash into one of the rolling spiky cylinders (which will make you jump up and restart from the beginning of the area). Or, with Mario's fire attack, crash into a large Koopa. The sound from charging up the attack or from running along the ground will continue even after getting hit or knocking down the koopa. This can get very annoying. To clear the sound, exit the area or use the fire/thunder attack again.