As the light from the torch fades, the purple light surrounding you gradually increases in brightness. The passageway gradually turns, though the light continues to increase. Before long, you realize that the glow comes from the very rock. No, not rock, but softly glowing crystals which gleam with inner light that seems warm and soothing as it bathes you.
Stepping around a final bend, the radiance of the chamber in which you find yourself dazzles you with breathtaking beauty. More than just light, more than a sound or vibration, something about the crystal chamber seems to energize, invigorate, and satisfy a nameless hunger of which you had been previously unaware.
As you bask in the energies of the room, you become aware of a steady pulse. Whether your heartbeat changes to match the pulse or the pulse changed to match your heartbeat you cannot say, but the rhythms of your body and the chamber synchronize, each becoming attuned to the other.
Gradually, you discern a song. You believe it to be a song, though one unlike any you have ever heard. It grows, filling your senses, your awareness, your entire being. In a sudden flash of insight, you realize that you hear and feel the crystal singing. What's more, the crystal making up the room, the glowing amethyst crystal pulsing and singing all around you, lives!