Here is mission 3: Find the Lost Chao for Hidden Base.
The Mystic Melody ability is located in a building that is guarded by iron containers after you run into the bomb monkeys the first time. Just drop down from there and go through the building to find it.
The Mystic Melody podium is located after the second building, which is after the stone maze. Just get to the top as if you are proceeding in the first mission and you'll see the podium as soon as you get out of the building from the top.
Time needed: 2:50
![](https://i.ytimg.com/vi/qUl-mao_iMA/maxresdefault.jpg)