So, apparently the theme for the 2nd half of the ShB final boss "Invincible" has actual lyrics instead of using some sort of voice synth. Who knew?

From dev blog:

Invincible

Lasciate

Ogne speranza

These memories ache with the weight of fate

Ever we fight

Never we fly

Ever we fall

Forever we fall

Now breathe deep of the darkness beneath the flood

Where all of the proud angels drink to their deeds of blood

Their lies, twisted and torn, into dreams they're spun

Yet ever we still stand tall

Invincible

Never we fall