Group of composers with nine missing? (3,3)
I believe the answer is:
les six
'group of composers' is the definition.
(I've seen this before)
'nine missing?' is the wordplay.
I cannot quite understand how this works, but
'nine' could be 'ix' (roman numeral) and 'ix' is located in the answer.
The remaining letters 'less' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'with' acts as a link.
Can you help me to learn more?
(Another definition for les six that I've seen is " French composers' group".)