Thomas Campion - Corinna

When to her lute Corinna sings,
Her voice revives the leaden strings,
And doth in highest notes appear
As any challenged echo clear.
But when she doth of mourning speak,
Even with her sighs the strings do break.

And as her lute doth live or die;
Led by her passion, so must I.
For when of pleasure she doth sing,
My thoughts enjoy a sudden spring;
But if she doth of sorrow speak,
Even from my heart the strings do break.

Thomas Campion

http://www.poemhunter.com/poem/corinna-2/