tomfrickery, II

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Across
  1. 2. "Filmed in front of a live ______ audience"
  2. 4. For the world to see
  3. 5. Type of pasta
  4. 7. Part of the scientific method
  5. 9. "Old news", "naturally artificial", e.g.
  6. 11. Replicating olden times
  7. 12. Dot-dash-dot
  8. 16. "Avengers: ..." (2)
  9. 18. Facebook relationship status
  10. 20. "Avengers: ..." (1)
  11. 22. Famous demon barber, in musicals
  12. 24. Tolkien book
  13. 26. [Lack of caution]
  14. 28. Work collection
  15. 29. Surveillance apparatuses, shortly
  16. 31. Spaceship-driving video game character Fox
  17. 34. Preceder of "open the gate", in children's playground sayings
  18. 38. Apple media player built-into macOS
  19. 41. "Let me know about it"
  20. 44. Top keyboard layer
  21. 45. Infidelity
  22. 46. Choosing chant
  23. 48. Publicly support
  24. 49. Let that ______
  25. 51. What O stands for in EGOT
  26. 52. Initiating conversation, or what the bracketed clues have in common
  27. 53. Period of activity, slangily
  28. 54. "Easy!"
  29. 55. [Intact]
  30. 56. Apple product whose ads featured dancing silhouettes
Down
  1. 1. Dubbed "the magical fruit"
  2. 3. Carnation genus
  3. 6. "Here's something to think about"
  4. 8. The J in JRR Tolkien
  5. 10. Running out of ____ (late)
  6. 13. "Quit that!"
  7. 14. [Before the matter]
  8. 15. Popsicle or cocktail
  9. 17. A bunch of baloney
  10. 19. [Five member Canadian R&B group]
  11. 21. 2008 video game featuring a keyboard-controlled runner
  12. 23. "Just so you know...", in texting shorthand
  13. 25. _____ of one's eye
  14. 27. Greatest work
  15. 30. Comprehensive; widespread
  16. 32. "What ____ in here?" ("This place reeks!")
  17. 33. Phone brand named after fruit
  18. 35. Obsolete term, meaning to the eighth power of
  19. 36. How many days in a month, occasionally
  20. 37. Glossy 2010's aesthetic
  21. 39. Sailor man in famous radio show
  22. 40. Omnipresent
  23. 42. Washington Post's weekendly crossword special
  24. 43. James, who produced "You're Beautiful"
  25. 47. Troubled orphan, in musicals
  26. 50. Phone brand whose name loosely matches a US state