5 Seconds of Summer began in 2011 when Luke Hemmings, Michael Clifford, and Calum Hood, who all attended Norwest Christian College, started posting videos of themselves performing covers of popular songs together on Hemmings' YouTube channel.
5 Seconds of Summer dimulai pada bulan Desember 2011 ketika Luke Hemmings, Michael Clifford dan Calum Hood, yang semuanya bersekolah di Norwest Christian College, mulai mengunggah video dari diri mereka menyanyikan cover lagu-lagu populer bersama di siaran YouTube Hemmings.