SINGAPORE - Armed with an energetic, punchy sound and a knack for crafting infectious, soaring tunes, the four fresh-faced teenagers of pop punk band 5 Seconds Of Summer are on the cusp of superstardom.
On Monday, they snagged Best Lyric Video for their track, Don't Stop, at the MTV Video Music Awards.
The youngsters - guitarist-vocalists Luke Hemmings, 17, and Michael Clifford, 18, bassist-vocalist Calum Hood, 18, and drummer-vocalist Ashton Irwin, 19 - are part of a new wave of success from Down Under.
Together with blonde sexy rap sensation Iggy Azalea and reclusive singer-songwriter Sia Furler, they find themselves leading a new Australian charge on modern popdom.
The statistics say it all.
5 Seconds Of Summer's eponymous album hit No. 1 on the US Billboard chart, moving 259,000 copies in a week.
That made it the third-largest debut of this year and the biggest debut for a group in nearly eight years.
Their strategy is a variation on the KISS formula: Keep It Short and Sweet. Most of the Sydney lads' melodic hits like She Looks So Perfect, Heartbreak Girl, and Try Hard average around three minutes - perfect for the short attention span of listeners these days.
The quartet made history by becoming the first Australian act to come out tops with its first full-length album.
In a recent interview with USA Today, Hood admitted that he and his mates were feeling the weight of fame and success, albeit in a positive way.
"You always feel pressure," he said.
"The boys and I have high expectations of what we want to achieve, but we're just having fun at the moment and taking it day by day."
Irwin told online publication Alter The Press: "We just want to be the biggest and the best band that we can be, and see how far we can take it."
Don't Call Them a Boy Band
There's one problem, though.
Earlier this month, Irwin told Billboard magazine that they are constantly ducking a very unwelcome label.