Ever find yourself singing along to a song without really knowing where you first heard it? Television commercials are the worst culprits when it comes to getting songs stuck in your head, and the H&M commercial for their new pants collection is no exception. So what's that song?

It's 'Girls on Film,' sung by Mona Donnerman and originally, '80s pop rock outfit Duran Duran. The H&M advert itself is fairly simple -- 20 seconds of mis-matched clips showing a leggy blond walking across the screen in different pants from the fall collection -- but somehow, we're hooked.

She's sassy-sexy in all black, casual for blue jean Fridays at work and ready for the leaves to change with a burnt red pant, all from H&M. Without 'Girls on Film,' however, this commercial would be just a montage of moving pictures. With the catchy song, we can't help but find ourselves really wanting a new pair of pants ... From H&M, of course. And perhaps a new Duran Duran album to match.

Watch the H&M 'Girls on Film' Pants Collection Commercial