Album: Whatever

This song is parasitic. As soon as those opening piano notes penetrate your ears, you're doomed. Despite "Tonight, Tonight" being one of the most sonically catchy songs you'll find yourself humming during an awkward first date, its lyrics are nursery rhyme easy. Any song that includes "whatever" and "doesn't matter" as punchlines in a chorus otherwise comprised of "woah oh oh" is a song that you essentially have no choice in not knowing by heart.

The track peaked at number 7 on the Billboard charts, and its sales exceeding 2,000,000 earned it double platinum status. Sure it's simple and watered down, but that's the best part and precisely why it was the summer anthem of 2011. Not to mention any song that condones a YOLO lifestyle is fine by us. -Alysa Lechner