As is often the way with unexpected hits, Kings of Leon's Sex on Fire almost never happened. During sessions for the band's fourth studio album, Only By The Night, frontman Caleb Followill had come up with a melody but had no lyrics to match it. "I just had this melody and I didn’t know what to say.
Then one day I just sang 'this sex is on fire' and I laughed," he told NME back in 2008. "I thought it was terrible, but the rest of the band were like, 'it’s good, it’s got a hook'.