There was no period of going, as there is even with electric light.

He spoke, and it was not.
Nothing whatever was visible.

I held a finger up, and poked my eye before I knew it.
Then all at once there began the most delicious music, like Ariel singing in mid-air.

It was subdued, but as clear as the ripple of a mountain stream over pebbles, and there was absolutely no locating it, for it seemed to come from everywhere at once, even from underneath us.
And simultaneously with the music there began to be a dim light, which was all the more impossible to locate because it was never the same color in two places, nor even in one place for longer than a note of music lasted.
"Observe!" boomed the Gray Mahatma's solemn voice.

"Color and sound are one.