1: Polish hollow late Russian coin (5)
2: Man, what an avant-garde US artist! (3)
3: Green coat for Italian composer and Spanish painter (9)
4: Something useful - like a matching collection? (5)
5: Child, bask by the sound (3)
9: African leader reversed stance on fabled writer (5)
10: Year inside for undone expert (5)
12: Begins seeing another divorcee? Deplorable. (3)