A Tempest in a Logo

A long time ago I cobbled together this design to use on some quartet business cards by combining curves I found in the Dingbat font in our old Dell computer and some noteheads from Finale. I must have assembled them in Microsoft Paint.

Imagine my surprise the other day when I opened up an e-book (2006) of The Tempest, and found that the designer at Yale University Press had either come up with the same logo herself, or happened upon one of our quartet's business cards, liked what she saw, and took a picture.