He heard the murmuring music, the plucked harp strings. Louder grew the sound and louder, and now all the body of the cube vibrated to their rhythm. The crystal walls were melting, growing misty as though formed of the mist of diamonds. And the disc itself was growing ... the shapes shifting, dividing and multiplying as though some door had been opened and into it companies of phantasms were pouring. While brighter, more bright grew the pulsing light.