Popular music production interlude is enormous (8)
I believe the answer is:
gigantic
'is enormous' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for gigantic that I've seen before include "Stupendous" , "Sizeable" , "Fantastically great" , "Thumping" , "Huge, enormous" .)