Happy Birthday!

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Across
  1. 2. Composed tunes by dicing endlessly without quiet (6)
  2. 5. Going out and hiding fashionable agony (4)
  3. 9. Broken arm pictures really tickles you (11)
  4. 13. Outsiders pine terribly for a happy encounter (13)
  5. 15. Rail prizes device found in kitchen (10)
  6. 17. Self-contained mob playing game (7)
  7. 18. I thank divided ally country (5)
  8. 19. Hmm, truncated and working grand people (5)
Down
  1. 1. Pithy bartenders drunk what you’ll receive (8,7)
  2. 3. Near enough viral, consumed us too initially (7)
  3. 4. Infection on potato, copper? Look, spies! (12)
  4. 6. Oxygen etc returns - time for musical ensemble! (5)
  5. 7. Where Boris lives, short prison material (6)
  6. 8. Unlikely, large sumo brings light (5)
  7. 10. There, within murky ale, something shadowy! (8)
  8. 11. Stinking ripe vat? Sounds like a yes from the magazine! (7,3)
  9. 12. Bloody egg broke messily, lost regarding nonsense (12)
  10. 14. Cure diseased cast (4)
  11. 16. Collection of recordings favoured protein (7)