Start to a popular song (5)

I believe the answer is:

intro

(Other definitions for intro that I've seen before include "this may get one started" , "Lead" , "Opening instrumental passage of song" , "Opening bars (abbr)" , "preface" .)

I've seen this clue in The Guardian.

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.