Perform the following tasks to summon the corresponding Sylvan Sprite.

Perilous Precipice:
Play the Song of Sworcery at this point and interact with the rainbows.

Stolid Log Bridge:
Play the Song of Sworcery at this point and interact with all of the trees by the river.

Sheep's Meadow:
Play the Song of Sworcery at this point and interact with the sky above the stick overlooking the meadow.