The unclued lights can be joined to form six pairs.

        Across

   6    No intro to US showbiz approach? (7)

11    Left earlier than usual in mere sport (4)

12    Whiteness of marital bed, only partly (6)

14    Again announce gusto outside bar (9)

17    Translated phrase, Latin, gets round (7)

18    Something stuck in organ? Emergency room taking a call (7)

19    Jumble sale with 50% off – clothing must go first (6)

20    Horrid runt regularly scurries to teacher (10)

22    Perhaps enough said by Will’s back-pedalling fools (5)

30    Excellent quip at first counters anxiety (5)

33    Calmer yoga changes bone growth? (10)

36    Count destroys academics, both saving skin? (6)