Nor rural sights alone, but rural sounds,

Exhilarate the spirit, and restore

The tone of languid nature.

William Cowper (1731-1800): The Task. Book i. The Sofa. Line 181.

Heard melodies are sweet, but those unheard

Are sweeter; therefore, ye soft pipes, play on,—

Not to the sensual ear, but, more endear'd,

Pipe to the spirit ditties of no tone.

John Keats (1795-1821): Ode on a Grecian Urn.

There was a place in childhood that I remember well,

And there a voice of sweetest tone bright fairy tales did tell.

Samuel Lover (1797-1868): My Mother dear.

He would not, with a peremptory tone,

Assert the nose upon his face his own.

William Cowper (1731-1800): Conversation. Line 121.