All the answers are Classical Composers. I have run out of ideas for the last few.
Q9 An opal does not contain it but a garnet does. 4.
Q13 A large number swamped by anger. 6.
Q15 He could brew up round the Orient. 5
Q22 A short operation in part of the jaw. 6
Q24 This kind of man, when sorted out, does useful tasks. 5