French master singer needs new arrangement (6)
I believe the answer is:
ingres
'new arrangement' is the definition.
The definition suggests a singular noun which matches the answer.
'french master singer' is the wordplay.
'singer' anagrams to 'INGRES'.
But, I'm not sure how the anagram is indicated.
'needs' acts as a link.
Can you help me to learn more?
(Other definitions for ingres that I've seen before include "French classical painter" , "French painter of elegant portraits" , "French painter; singer (anag)" , "Odalisque painter" , "Producer of old pictures" .)