Across:
   3. Top 17 piece of music? (3)
   8,18. Dream dream of 6 23 and 16's final work (6 7)
   9. Mocks man's loop arrangements (8)
  10. They punctuate their music with accented movement (second time omitted) (8)
  11. Weird stoner vocalists (6)
  12. Sanity restored after exorcising one's evil (5)
  13. Rock stars' wedding held here (9)
  16. Artist from Tokyo, not to be upset with times gone by (4 3)
  18. see 8
  21. Management con singer with newspaper cutting perhaps (9)
  22. Tesla rumoured to offer "Back in the U.S.S.R." range (5)
  25. Epic song about everything evil (6)
  27. Singer on drug? Forbid it at the outset! (8)
  28. Nineties dance genius... (8)
  29. ...who embraced art mostly at commercial end? (6)
  30. Insubordinate racket! (3)
Down:
   1. Musical form of piece suffers on a tabla (6)
   2. They may be heard in a court once it's job is modified (10)
   3. 17 and 6 23 wanted a chance for this piece to be heard (5)
   4,20. Using unfortunate tabloid snap, con musicians (7 3 4)
   5. Stream flowing into pond where 16 and 6 23 honeymooned (9)
   6,23. No taking one's place as revolutionary goes after gospel singer (4 6)
   7. Begs teen star to perform (8)
  12. Sanity ruined when it's destroyed in negativity (3)
  14. Someone must have written it later... rue it being corrupted! (10)
  15. Rude? Blind drunk and out of control! (9)
  17. No seconds get in, so practise frantically for this sort of production (8)
  19. Older musicians with partial eyesight (3)
  20. see 4
  23. see 6
  24. Queen's top hit? (5)
  26. Cloud site regularly used? Drive! (4)