Artist: Kings of Leon Track: "Sex on Fire" Album: Only by the Night Listen

The results haven't always been what fans have been after, but Kings of Leon have pushed themselves into darker, more sophisticated territory with each of their albums. That drive informed the best songs on Aha Shake Heartbreak and certainly most of 2007's Because of the Times, an occasionally heart-stopping examination of aging, facing responsibility and being completely, utterly lost.

The first single from their upcoming release, to be released Sept. 23, seems another step forward and should rekindle fans who went all ape-poop for their debut. It's got the heady concepts of late coupled with the hard-driving melodies that made them famous.