Note: you must have all mystic melodies in order to find the chao... in MOST cases. use it by the small ruins located in the levels. City Escape: On the part where sonic is running down the building, jump off so that you miss the springs on the bottom. Run along the base of the building and you will find the ruins. Radical Highway: After the second rocket, you pass through a checkpoint and go down a hill. Spin dash to gain speed and at the bottom of the hill jump off to the right in the gap between the roads. try to land on the spring at the bottom. it will take you up the bridge, but when you land, go to the right instead of continuing straight and you will find the ruins. Sky rail: The ruin is hidden behind some boxes on a platform containing a checkpoint and the start of some rails. Metal Harbor: The ruins are in one of the compartments on the left side of the runway where planes try to bomb you. Final Rush: On the platform that contains the fourth checkpoint, backtrack a bit to find the ruins that will guide you to a second ruin, taking you to the chao. Sand Ocean: On one of the rotating platforms in the middle of the level with bomb-carrying robots hovering over it, there is a path on the right. the camera angle will lead you to this path, but ignore it and instead go straight ahead. There will be a platform you must hover onto, then another, and some iron boxes to shoot down before you reach the chao. you do not need a mystic melody for this mission.