5 Seconds Of Summer
Luke, Ashton, Calum, Michael
This wonderful band formed back in December 2011, but only Luke Hemmings, Calum Hood, and Michael Clifford were in it at the time. Ashton Irwin joined the band as the drummer later that month. The four Australian boys started out making covers of popular songs on YouTube, and eventually started gaining popularity. They then started releasing EP Singles, which got really popular. In 2013, they went on One Direction's Take Me Home Tour. This year, they went on their own little tour in the U.S., and are joining One Direction on their Where We Are Tour this year.