Maroon 5 frontman Adam Levine wrote this with Australian singer-songwriter Sia (David Guetta's "Titanium
," Rihanna's, "Diamonds
"). Guitarist James Valentine told Billboard
magazine: "Living here in Los Angeles we've known Sia for a long time, back from when she was just an artist, before her second act as, like, the most brilliant pop songwriter of all time, so it was really cool just to work with her."