1: Three kernels of copper-yellow grain (3)
2: Repeated note to help player? (6-7)
3: Headache starts to reveal a body part (5)
4: Hoarded tiny bits of dryness (11)
5: Child is to depart, finally (3)
6: Norm even had a good time (7)
7: Zantac's first in things to buy for composer (5)
10: Actor works on two dialects (5,8)
11: Mark in Russian bar, empty the night before (5)
12: Toff aimed to do himself proud. (11)
17: '5 cents', I slurred, 'for a Russian man' (7)
19: Ascendant Brazilian city supports church singing group (5)
21: After church, scream at sight of mouse's boldness (5)
23: Root for mounting might (3)