Tik Tok Redneck is a mix of Ke$ha and Lamb Of God. These artists should never be in the same event, much less the same song, but for whatever reason this worked really well.
The creator of this song, Isosine, has done some seriously good work with Mashups, but this is without a doubt one of my favorites.
Edit 9.17.17: Adding this version to anybody that wants to hear the song still since it's been blocked
This may seem like a novelty to your guys, but in my heart it is amazing.