This Jimmy Robbins, David Lee Murphy and Jon Nite penned ballad is about spontaneity in a relationship. "'Let's Do Something Tonight" is that 'I'm ready to do something dangerous' song, lead singer Mike Eli told Rolling Stone. "I think maybe that's why we love it so much. It felt like that Friday night anthem that our band has never really had and this song accomplishes that without being cliché."
"We knew we had to record this tune from day one of making this album," he added. "A simple idea but not treading water in that boring, been there/done that territory."
16-tear-old Lorde wrote the lyrics to "Royals" at home in just half an hour. She was inspired by the "ridiculous, unrelatable, unattainable opulence" that runs through such albums as Kanye West and Jay-Z's Watch the Throne and Lana Del Rey's Born To Die.