1. It can make music, but it's usually stopped (5) -r-a-
2. One in a class of his own? (7) t-----r teacher?
3. Regions paradoxically including the downs (7) -p---d- 4th letter could be (a) upwards?
4. Potentate plants tree in Pennsylvania (5) -a--- 4th letter could be (h) someone said (pasha) before ?