How Do You Get the Hero Song?

The Song of the Hero is learned in four parts: one from Faron, one from Lanayru, one from Eldin, and one from Levias. It is used to open the Skyloft Silent Realm.

Can you do the song of the Hero in any order?

Link can collect the pieces in any order, but it is advised to go to Lanayru Desert last, due to a game-breaking glitch that may render a save file unplayable.

How do I get all the Tadtones?

You must collect every Tadtone in a group for the group to count. You only have a few seconds after touching one Tadtone to collect another of its color or the whole group resets. This means that long strings of Tadtones must carefully and methodically be collected, while tight clumps can be collected all at once.