(NOTE!! You can only do this cheat after getting the Hammer Techniques from the Chuckle Hut.) Whenever you are near a green warp pipe, press start and have Mario become the leader. Next, press are until Luigi has his hammer icon. After doing so, strike Mario, turning him small. Afterwards, proceed into the green warp pipe. When you do, instead of the Super Mario Bros. Theme remix playing, it will be the theme of the area you were just in. When you then select a warp other than the one you entered, you will go out of the pipe, and the music will still be the theme of the area you were previously in. I.E., if you were to warp to Stardust Fields from Chuckle Woods, the Chuckle Woods theme will be playing in Stardust fields. This occurance will end when you leave the area, or hammer Mario again, and leave through the warp pipe.
Added by: supershadow64ds Apr 2nd 2011, ID#13447