Only the sound of his cloak rustling said that he hadn't simply vanished with the light.

The sound of an engine coming closer said it all.

The sound of his voice says fear and I am also afraid.

"The sound of a river in the distance," Spock said.

The sound of laughter after she said it floated in the air around him, sounding musical.

The sound of a muffled voice said in an accent that he couldn't quite place.

He growled, the sound coming clearly from the speaker, then said something Bork didn't understand.

"Yes," said Gladstone, but although her lips moved she heard no sound.

All sounds pretty "green" to me, much healthier and the kind of thing Guardian writers have been saying we should do for years.