John Milton 
Minor Poems by John Milton [EPUB ebook] 

Blest pair of Sirens, pledges of Heaven’s joy,
Sphere-born harmonious sisters, Voice and Verse,
Wed your divine sounds, and mixed power employ,
Dead things with inbreathed sense able to pierce;
And to our high-raised phantasy present
That undisturbed song of pure concent,
Aye sung before
the sapphire-colored throne
To Him that sits thereon,
With saintly shout and solemn jubilee.