Across:
   1. Fair city - somewhere to live, mostly a musical (8)
   5. see 20 down
   9. Rent trouble ... a death spiral? (7)
  10. Famous sports club remained flat as part of 1 across hit by '99 9 (7)
  11. Prince's role: hairy lunatic (5 4)
  12. 17 city built from tail of 1 (5)
  13. Burns perhaps at the races (5)
  15. Dancing sexily in the capital, but prone to getting the sequences wrong (8)
  17. Corner brother and request a plain position (8)
  19. Middle of Capetown erupted - who's responsible? (5)
  21. Is mind-blown about overhead railways (5)
  22. Predicting he tip crop failure (9)
  25. Pressure of wind resistance soon taking cap off (7)
  26. Returning from his exile, he twirls (7)
  27. Over keen, I'd tend to ignore the odds (5)
  28. This place is in a right state! (8)
Down:
   1. Exchange parts to escape epidemic (8)
   2. Brown... bad, bad style royal houses! (5)
   3. Like a proverbial stunned rabbit at the Reverend's heavy metal bash (7)
   4. Increased embrace of love in 1 across city hit by '99 9 across (5)
   5. Cloudy outside, recreation of some dramatic weather (7)
   6. Outwardly proceeding with liberation, but removing leaders of coup inside party (9)
   7. Asks about fencing an expanse of prairie (6)
   8. Coming up with airy sorbet mash... taking final couples out for this dessert (8)
  14. City initially flattened, along with 1 across county hit by '99 9 across (9)
  15. Into which most people put dirt but lunatic puts sand (8)
  16. Kerfuffles as ludicrous as farces (8)
  18. Ponders how to answer (7)
  19. Dramatic Danish lass in dramatic Irish weather (7)
  20,5ac. Infrastructure project in 1 across town hit by '99 9 across (6 5)
  23. Separate article written in conjunction (5)
  24. State reformed taxes (5)