Revelation in ballad shortly penned by a writer (10)
I believe the answer is:
apocalypse
'revelation' is the definition.
(synonyms)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for apocalypse that I've seen before include "World's end" , "sacred book" , "End of the world" , "Catastrophic event" , "Revelation" .)