Feb. 23 (UPI) -- 5 Seconds of Summer has returned with a new single titled "Want You Back" alongside the announcement of a new world tour.
"Wish I could say something / Something that doesn't sound insane / But lately I don't trust my brain / You tell me I won't ever change / So I just say nothing," member Luke Hemmings sings on the pop-rock track released Thursday, before launching into the chorus, "No matter where I go, I'm always gonna want you back / No matter how long you're gone, I'm always gonna want you back," the song continues.