The Island of Destiny

You look around in search of a way back up the cliff but there's nothing in sight. You are completely stuck on this ledge and the only way you can go is inside the cliff. But you find further incentive to venture inside when you start to hear an eerie melody emanating from the cave. Cautiously, you start to wander inside.

You take it easy, keeping your hands close to left wall of the cave to make sure you don't get lost. Eventually, you lose sight of the cave enterance and besides for tiny cracks of sunlight in the rock, it is completely dark. You then start to hear the music again. You listen closely and discover that the music sounds like....