Takahito Eguchi on Sonic Lost World Original Soundtrack:

The Lost Hex

This is the music playing in world map and looks like a relative of the main theme Wonder World. The tempo from the theme is comfortable but lilting, and the piano’s notch is pleasant, showing the pop feeling in which the strength came out with a good sense entirely. The detaining prescription is quite the point that it shows “the smell of the theme unconcernedly.”