"King's Speech” reworked — hear via Dame (1,4,1,5)
I believe the answer is:
i have a dream
'king's speech' is the definition.
(I've seen this before)
'reworked hear via dame' is the wordplay.
'reworked' is an anagram indicator.
'hear'+'via'+'dame'='hearviadame'
'hearviadame' is an anagram of 'I HAVE A DREAM'.
(Other definitions for i have a dream that I've seen before include "King's Speech" , "King's confession" , "Martin Luther King quote" , "American idiom" .)