“Who Do You Love” is the first single released by The Chainsmokers following the release of their second studio album Sick Boy and features the Australian pop-punk band 5 Seconds of Summer. The song features more pop-driven production than many of their recent songs, incorporating future bass elements that harken back to their earlier hits.

The Chainsmokers shared a post on their Instagram two days before the release of “Who Do You Love” with the caption:

3 years ago today we released Dont Let Me Down! This was our first time playing it in NYC on New Years and this is the exact moment we realized we had something special! This song changed the entire way we approach music and our lives! This Thursday we got another song coming that might do the exact same