Nero Dumas rewrote a ballet (9)

I believe the answer is:

rosamunde

I'm a little stuck... Click here to teach me more about this clue!

'a ballet' is the definition.
I know nothing about this answer so I can't judge whether this works.

'nero dumas rewrote' is the wordplay.
'rewrote' indicates anagramming the letters (I've seen 'rewritten' mean this).
'nero'+'dumas'='nerodumas'
'nerodumas' with letters rearranged gives 'ROSAMUNDE'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

Want a hint initially instead of a full solution? Install my app