Australian boybanders Luke Hemmings (vocals, guitar), Michael Clifford (guitar, vocals), Calum Hood (bass guitar, vocals) and Ashton Irwin (drums, vocals) are 5 Seconds of Summer. Luke is the blond cutie, the Harry of the group, I’m thinking. The big, boldface name who gets the most attention. I’m slightly more intrigued by the little seapunk guy behind him, not sure which one he is. Anyway, as the opening act on the One Direction tour, 5 Seconds of Summer got a HUUUUUUUUGE bump in popularity recently, and this song seems to be the one that’s giving them their first American exposure. What do you think? Do we let them into our hearts and onto our radios? Or do they go the way of Hot Chelle Rae, The Wanted, Social NetworkK and IM5?