For alternate backgrounds in Team Battle or Normal modes, when selecting the stage, hold the START button. For the "Dural" backgrounds in Team Battle mode, when selecting the stage, highlight the desired stage, hold the START button, and then let the timer run out. Note that this trick will not work for Aoi's stage or the Underground stage. Also note that using this trick results in alternate music for all stages except Jacky and Lau's stage. For the "Dural" backgrounds in Training mode, when selecting the stage, hold either the START button or the X button. For alternate backgrounds in Training mode, when selecting the stage, hold both the START and the X buttons.