Crossword Genius

Composer not right about sacred writing (5)


I believe the answer is:


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'writing' is the definition.
Both the answer and definition are singular nouns.
I also know that 'writing' relates to this answer.

'composer not right about sacred' is the wordplay.
'composer' becomes 'Verdi' (Giuseppe Verdi c8c3-c90c).
'not' indicates named letters should be taken away.
'right' becomes 'r' (abbreviation).
'about sacred' becomes 'c' (I can't explain this - if you can you should give a lot more credence to this answer).
'verdi' with 'r' taken out is 'vedi'.

Can you help me to learn more?

(Other definitions for vedic that I've seen before include "Sort of language" , "of ancient texts" , "religious language" .)

I've seen this clue in The Times and The Sunday Times.
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