3d New composition for cantor left to female singer (9)
5d RA, perhaps, excited about best people in art school (3-11)
28a Problem of mine stimulated a politician (8)...
7d On English research site, speaking at length and adding to much detail (4-11) O---/E-A-O-A-I-G 13d Romance with a female, beautiful with nothing on (4,6) -O-E/-F-A-R 17a Joined and served? Not I...
18a Notice at back of brochure, say, about new place where one can pick up one's mail (5,8) P----/-E-T-N-E
19d Flag in a western US city (7) --G----...
25a Woman engages lad for building work (7) -A-O-R-
3d Nosh swallowed by good French cookery writer (6) -E-T-N
6d Stray animal originally taken in by fixer (7) -E---E-...