Crossword Genius

My singers' interpretation is greater than the sum of the parts (9)

Ross

I believe the answer is:

synergism

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'greater than the sum of the parts' is the definition.
I can't tell whether this defines the answer.

'my singers' interpretation' is the wordplay.
'interpretation' is an anagram indicator (I've seen this in other clues).
'my'+'singers'='mysingers'
'mysingers' with letters rearranged gives 'SYNERGISM'.

'is' acts as a link.

Can you help me to learn more?

(Other definitions for synergism that I've seen before include "Working together" , "Cooperation of two or more things" , "Effective integration" .)

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