Okay, go to the Final Rush stage for Sonic.(Hero side) Go past the fifth checkpoint marker. Go down to the ORANGE rail and rail on it, you should go down on it a little to a green X. JUMP at the X and go straight to the next platform. There should be a RED rail hovering over it, so go on that. You should swerve a little and pass through ONE ring. At the end of the rail there is a speed pad, and a verticle grinding thing. Just go on them normally. There are two speed pads and a large verticle rail. Go on that. there is a spring at the top so just deal. Now there are a PURPLE and an ORANGE rail. Go on the ORANGE. Now after a very little bit you should see a platform with a Ruins thing on them.(The mystic Melody thing.) Ignore it. Just keep railing and there is another checkpoint. Pass it and you should be on the ORANGE rail. After one thing of going down there is a platform with orange circles on it. Jump off after going down Once. You should land on it(Easier than it sounds). Now there is a rocket, go on it. You should go through three hoops of railing, and land on another platform. Now you should be getting a life when you land on it. Look over and there is another platform with a sheep and a spring on it(Ignore the sheep if you want). Jump on the spring and there are about two platforms here. Go to the verticle railing and go up it. You should see a Ruins thing and a green-lit circle. That would be the Mystic Melody.