Cryptic crossword No 3,976

Across

1. Some from within North Korea actively block artist? (6)
2. Amended pie chart displays quotation (8)
3. Coats off for one of 19d (5)
4. Reportedly completely cross with location of parliament (8)
5. Song finale echoed in one of 19d (7)
6. Eastern polymath forgetting ancient history at first, excitedly discovers old polymath (7)
7. One of 19d's dog owner originally before that man then me (2,6)
8. Plant growth regulator found in bovines we hear (5)
9. Start clue for rife? (4,2)
10. Number of aliens to get convictions? (6)
11. Small playwright engages small single woman (8)
12. Cast or managed performers (6)
13. A Wet Wet Wet cover? (8)
14. Temple site with stormy rain is typical of the country (8)

Down

1. Delivery of larger kitchen utensil (6)
2. Wayward old electronics company suffering extreme losses (6)
3. Nice has a turbulent large body of water (5,3)
4. Clue for star's live entertainment? (10,4)
5. Avatar with tail twisted one of 19d (2,8)
6. Finally arid soil causes famine (6)
7. Laugh over new musical's informal sing-along (10)
8. Claude perhaps first to direct a Verdi opus (4)
9. Meeting over the waves count on sailor to capture heart of Lydia (8,6)
10. Knights in shining armour supporting king changing sides in lists (8)
11. Soap rewritten to include old queen in performances (6)
12. Settled in Pennsylvania before Idaho (4)