Fewer Songs, More Often! How Top 40 Radio Keeps You Listening Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email To keep you listening, programmers at Top 40 radio stations are playing the biggest hits, like Robin Thicke's "Blurred Lines," more frequently, since people don't tune out something familiar. ( Courtesy of the artist ) Produced by WNYC