The climax is when Melody gets her Medi-talker
"Dies Irae", is a Latin word of the Hymn on the Last Judgment, ascribed to Thomas of Celano (d. c. 1256) and once forming part of the office for the dead and requiem mass.
This is part of the website I've found and I believe it'll help you out to find the era composition: https://www.britannica.com/topic/Dies-irae
Hop this helps!
Literature. /Romanticism valued imagination and emotion over reason and intellect./ Gothic short stories are a subgenre of American Romanticism/. Love is the primary theme in the literature of American Romanticism.