I remember watching attack of the show a few years back before they changed the format and ruined the show, they showed a program you could download from the net to make your own maps on your pc, it had all the blocks and everything and you just clicked and dragged and it was real easy, sorry I have no Idea where to find it. But I think this may have been from that possibly, and someone made one to go with the music.
Wow that is crazy, it looks like someone modded super mario world to have custom courses and make a course to this song, would take forever to get the timing right, props to whomever made this.