5 Seconds of Summer (often abbreviated as 5SOS) are an Australian pop rock band from Sydney, New South Wales, formed in 2011. The group were originally YouTube celebrities, posting videos of themselves covering songs from various artists during 2011 and early 2012. They rose to international fame while touring with One Direction on their Take Me Home Tour.
In early 2014, the band released "She Looks So Perfect" as its debut single, which topped the charts in Australia, New Zealand, Ireland and the United Kingdom. The self-titled debut studio album was released in June 2014, which peaked at number one in 11 countries and followed by a live album titled LiveSOS. The band released their second album Sounds Good Feels Good in October 2015 and followed up with the release of a live documentary DVD called How Did We End Up Here.
On 2 December 2016, the band announced the release of their B-sides and rarities previously unavailable worldwide under the title This Is Everything We Ever Said to celebrate their fifth anniversary as a band.