There was discussion recently about an organization making a "sea change" decision. I wondered where it came from and through Wikipedia found the song (by Ariel) in Shakespeare's The Tempest. I hadn't remembered it, but I find it delightful and thought you might, too:

Full fathom five thy father lies;
Of his bones are coral made;
Those are pearls that were his eyes;
Nothing of him that doth fade,
But doth suffer a sea-change
Into something rich and strange.
Sea-nymphs hourly ring his knell:
Ding-dong.
Hark! now I hear them — Ding-dong, bell.