5 Seconds of Summer

5 Seconds of Summer. Actor: 5 Seconds of Summer: Don't Stop. 5 Seconds Of Summer (also known as 5SOS) is an Australian band consisting of members Luke Robert Hemmings (born 1996), Michael Gordon Clifford (born 1995), Ashton Fletcher Irwin (born 1994) and Calum Thomas Hood (born 1996). They were first formed in Sydney during 2011 and began posting Youtube videos. Luke on vocals and guitar, Calum on vocals and bass...