I beg to disagree, the model seems quite capable of creative and varied interpretations (on the heavy metal side of things) of complex prompts, for example this (modernized) bit of John Milton:

He spake: and to confirm his words, out-flew

Millions of flaming swords, drawn from the thighs

Of mighty Cherubim; the sudden blaze

Far round illumin'd hell: highly they rag'd

Against the Highest, and fierce with grasped Arms

Clash'd on thir sounding Shields the din of war,

Hurling defiance toward the Vault of Heav'n.