My singers' interpretation is greater than the sum of the parts (9)
I believe the answer is:
synergism
'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" .)