With 'Youngblood', 5 Seconds Of Summer just got hotter

5 Seconds of Summer comprises (from left) Hood, Irwin, Hemmings and Clifford. — AP

5 Seconds Of Summer was already in shock when its album beat out Beyonce and Jay-Z for the top spot on the Billboard 200 chart this summer. But having its single Youngblood reach the No.1 spot on the pop songs chart and become an international smash hit has the band in awe.

“We really didn’t expect this,” said singer-guitarist Michael Clifford of the Australian rock-pop band, which includes Luke Hemmings, Calum Hood and Ashton Irwin.