Earwormed? What's that?

You have to hear that song. That really catchy song that you recently discovered somehow. Maybe on the radio, Pandora, a music blog, whatever. You didn't really think much of it, but now you're humming broken pieces. And all you really remember is that one line, that one line that is all you can think about now. It's just playing on a loop over and over and you don't even know the words but it keeps playing anyway and now you really just wish it would stop because it's driving you crazy! Rrrrgh!

You can't stop. It worked its way deep into your brain and now it won't get out of your head. 
You've just been earwormed.

That's what it's called. A song that gets stuck in your head. It happens all the time. To everyone. And we all seem to have a love/hate relationship with this phenomenon. Maybe you really like the song that's earwormed you, maybe you like it less after it won't leave you alone. Maybe you even hated the song to begin with. Unfortunately, disgust for a song will not protect you and may result in earworms of the worst kind.
Case in point:

In this blog, I will examine earworms old and new, taking a closer look at exactly why they're so damn catchy. Certain traits that are generally present in an earworm-type song (or "earworm elements") include, but are not limited to: repetition, high-energy, synth, weird/intriguing sounds and a general catchiness of melody, riffs, hooks, lyrics, bass, and beat.

To start off, here are a few songs that I find appropriate because of their earworm-pun titles. Ironically, but not completely coincidentally, these songs are, themselves, earworms. Try listening without it getting to you. I dare you.

"Please Don't Stop the Music" by Rihanna
Okay, I have to admit--I really liked this one.

"Can't Get You Out Of My Head" by Kylie Minogue
Never big on this one, but it has some cool elements.
It's definitely earwormed me several times though.

"Over and Over" by Kelly, ft. Tim McGraw
Terrible, terrible, I know. But still counts as an earworm.
The kind you really don't want.