I set the world on fire

I heard a song played on the radio singing" Tonight.. We are young. So let's set the world on fire. We can burn brighter than the sun " last time, I didn't know what was the title of the song and who was the singer/band that time. The voice sounded like somewhat between a female and a male's voice. Didn't bother bout it though, I just like how he/she sounded and the song was nice. Today, someone posted the song in his facebook, only then I knew its a band called FUN. and the lead singer's a dude.