5 Seconds of Summer is an Australian pop rock band formed in 2011. The group consists of four members: Luke Hemmings, Michael Clifford, Calum Hood, and Ashton Irwin. They gained popularity through their association with the band One Direction, opening for them on their world tour. The band's self-titled debut album was released in 2014 and included hit singles like "She Looks So Perfect." Known for their catchy melodies and energetic performances, 5 Seconds of Summer has since released multiple albums and received several awards, establishing themselves in the global music scene.