Work by Ovid, poem some trash unusually (13)

I believe the answer is:

metamorphoses

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'work by ovid poem some trash unusually' is the definition.
I can't judge whether this defines the answer.

'poem some trash unusually' is the wordplay.
'unusually' indicates anagramming the letters.
'poem'+'some'+'trash'='poemsometrash'
'poemsometrash' is an anagram of 'METAMORPHOSES'.

Can you help me to learn more?

(Another definition for metamorphoses that I've seen is " Complete changes".)

I've seen this clue in The Telegraph.

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