5 Seconds of Summer

5 Seconds of Summer, often abbreviated as 5SOS, is a pop-rock band from Australia formed in 2011. Consisting of four members, the band has gone from being popular on YouTube to becoming one of the most successful Australian musical acts in history. Along with having over 7 billion streams, they also sold more than 2 million concert tickets and 10 million albums. Their most popular singles include "Youngblood," "Who Do You Love" and "She Looks So Perfect."