You've already asked this one on 17th May.
This is a GBQ question so please do not give a direct answer.
It is against the rules /spirit of the quiz /and the request of the organiser of the quiz to ask questions from it on sites like this. (as you well know Sophocles).
As more and more people are leaving the quiz due, I believe, to the more difficult questions being freely answered, (when most of us spend time trying to sort out the answer for ourselves), it is extreme danger of folding (as per the last newsletter).
Sophocles - you could do what I did. Google 20th century composers and wikipedia then go from there. It took me all of 5 minutes.