5SOS was totally formed by the end of 2011 (when Ashton joined the band). There is Luke Hemmings on rhythm guitar and lead vocals, Calum Hood on the bass guitar and vocals, Michael Clifford on the guitar and background vocals, & Ashton Irwin on the drums and background vocals. All of them are best buds and they came out with there first EP album on itunes April 1st, 2014, featuring She's so Perfect, a song showing more of there rock side. They opened for One Direction on their Take Me Home and the Where We Are tours in 2013 and 2014.