Before Hot Chelle Rae "fueled up the Jeep with bubbly elasti-funk and breezy hip-hop swagger" (as Entertainment Weekly put it) with their brand new single "I Like It Like That," the Nashville-based quartet scored a bonafide breakthrough smash hit over the last several months with "Tonight Tonight." Declared "one of the catchiest pop-rock anthems of the summer" by USA Today, "Tonight Tonight" crashed into the Top 10 on the Billboard Hot 100 chart in July like an unruly teenager, shot to No. 1 at Hot AC radio in September, was certified double-platinum in the U.S., and certified platinum in Canada and Australia. Meanwhile, its hilarious video (featuring a cameo by guitarist Nash Overstreet's brother, Glee's Chord Overstreet) has racked up nearly 30 million views online, energizing the group's active, devoted fan base. But it wasn't until Jon Stewart sang a snippet of its chorus on The Daily Show that the band realized just how thoroughly "Tonight Tonight" had penetrated the mainstream.

What's not to like? With its once-heard-never purged melody, "la la la" refrain, and sly references to Zach Galifinakis, the song is a shameless crowd-pleaser. It has also been a game-changer for this hard-working young band, which formed in 2005, released its debut album, the dance-rock oriented "Lovesick Electric," in 2009, and has been waiting for its break-out moment ever since. Hot Chelle Rae's time has arrived with the band's new album, "Whatever" - an unstoppable fireball of radio-ready tunes that finds them embracing who they really are: a band unabashedly in love with pop music.