Add a new soundtrack to (3)

I believe the answer is:

dub

(Other definitions for dub that I've seen before include "Knight; call" , "Make a knight" , "Add sound effects or music" , "Copy to tape or disc" , "Ennoble" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.