Here is mission 3: Find the Lost Chao for Eternal Engine.
The mystic melody podium can be found right after you go outside from the room near the first chao box. Just look to the left and you'll see the podium. Follow it to the second floor and be careful around there. Afterwards, you'll jump to a moving platform and will have to hover over some lasers to a door, which has the lost chao inside.
Time needed: 2:45
![](https://i.ytimg.com/vi/0b7c8hRETIM/maxresdefault.jpg)