Unfortunate outcomes of a song for chorus in musical (12)

I believe the answer is:

catastrophes

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'unfortunate outcomes' is the definition.
The definition and answer can be both related to natural events as well as being plural nouns.
Perhaps they are linked in a way I don't understand?

'a song for chorus in musical' is the wordplay.
'song for chorus' becomes 'strophe' (I've seen this before).
'in' indicates putting letters inside.
'musical' becomes 'Cats' (Andrew Lloyd Webber musical).
'a'+'strophe'='astrophe'
'astrophe' going within 'cats' is 'CATASTROPHES'.

'of' acts as a link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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