Taylor Swift - We Are Never Ever Getting Back Together
If you still think T-Swizzle is still a country artist and not a full-blown pop princess, this song should've quelled any doubts. A pounding beat and a super infectious chorus make this one of Taylor's best songs. It's a different type of music from her, but she pulls it off extremely well. Note to self: do not break up with Taylor Swift.
Also: this song has had some pretty sweet pop punk covers