Musical country broadcast (6)
I believe the answer is:
grease
'musical' is the definition.
(Grease is a film musical)
'country broadcast' is the wordplay.
'country' becomes 'Greece' (Greece is a European country).
'broadcast' indicates a 'sounds like' (homophone) clue (how the word might sound on the radio or TV).
'greece' is a homophone of 'GREASE'.
(Other definitions for grease that I've seen before include "Musical animal fat?" , "Musical starring John Travolta and Olivia Newton-John" , "Possible cause of slip-up" , "Musical that sounds like a country" , "Rock musical" .)