I sat upon a promontory,
And heard a mermaid, on a dolphin's back,
Uttering such dulcet and harmonious breath,
That the rude sea grew civil at her song;
And certain stars shot madly from their spheres,
To hear the sea-maid's music.
'A Midsummer Night's Dream' (1595-6) act 2, sc. 1, l. 149