1: Keep back a missing ingredient for gunpowder (5)

4: Gershwin's retirement account? (3)

6: Vicar regularly outdated technology (1.1.1.)

7: Abundant specimen doffing cap (5)

8: Ninth-inning heroics on one side or the other (9)

11: King John's last to find out (5)

13: Gained a hearing (3)

14: Thumb Drum? (3)

15: Makes empty noises behind listener. (5)

1: Five in Christmas story (5)

2: Pitch out heartlessly the cards. (5)

3: Change order: Raise scope (9)

4: A representative may be a scamp (3)

5: Five kills one. (3)

9: A cow further down? (5)

10: Pulls Americans (5)

11: Clothilda is carrying a parcel (3)

12: Toothpaste brand at Target? (3)