Cryptic crossword No 1,544

Across

1. Small band in arena permit us to go (7)
2. Working with 6a, regularly delayed (2,3)
3. Grumble at first, taken in by evil clue (4)
4. Finish off cool pint with me (10)
5. Type of sale catalogue for back pocket? (5,3)
6. Nearly saw moon's slow movement (6)
7. Cruise without a price? (4)
8. Hurry back to get essentially great deal (5)
9. Beg a bit of turkey fat (4)
10. Holy man may be here in tree getting arm twisted (6)
11. What brought about a bull's itchy skin? (4,4)
12. Retrograde state once of half Berlin's upholstery material (4,6)
13. Old reserve team transport? (4)
14. Chosen people from the east eat celery extract (5)
15. Trees possibly gone to stuff dams (7)

Down

1. She may offer poison as gift as well as advice for rat (10)
2. Bring forth illegal sound (6)
3. Scrap section of legato music (4)
4. Covering round part of leg: one seam visible here? (8)
5. Intimate time after 6d, naked (4)
6. Ringing in most of daily service (5)
7. I own large book written up initially as controversial (7)
8. Fruit rat? (5)
9. Oban is port re-developed for incorporation (10)
10. Battered hero's now shortly coming in to land (7)
11. This place between tit and bum surprisingly is somewhere very difficult to reach? (8)
12. One appears in a phone display (6)
13. Wind instruments found in s-sacks? (5)
14. Rally, being sound of heart (4)
15. Duck holding minute shell (4)