Introducing 5 Seconds of Summer!

If you haven't heard of the Australian pop rock band 5 Seconds of Summer (or 5SOS for short) you're not alone… but if you know and love them, you're in good company!

The group has a massive international fan following, and soon will be known to even more fans across the world, as they're supporting One Direction on their worldwide Take Me Home tour!

The band features 16-year-old Luke "Hemmo" Hemmings on lead vocals and guitar, 17-year-old guitarist Michael Clifford, 17-year-old bassist Calum Hood, and 18-year-old drummer Ashton Irwin.

The boys are all super cute, talented, AND they play their own instruments! Though they may not yet be well known to American audiences, they're certainly a force to be reckoned with.

One Direction's Louis Tomlinson is a long time fan of the 5SOS, and when he posted a link of their YouTube page to his Twitter, it helped the boys rise to international fame! 1D's Niall Horan is also a big fan, tweeting a video clip of the band's first single, "Out Of My Limit."

The song is an emotional, guitar-driven rock tune about love and longing- a topic we can all relate to! The video for the song reached 100,000 views within just a day!

Are you a long-time fan of the band, or a new convert? Tell us about it in the comments below!