Britney Spears' "If U Seek Amy" came out at a time when Amy Winehouse was one of the most famous singers alive. The tune might allude to Winehouse's public image.
Ever since Britney Spears' first song took the world by storm, people were predicting her career would soon fizzle out. Instead, she racked up five No. 1 singles.
Lady Gaga's "Bad Romance" inspired one of the best and trippiest music videos of all time. The director of the clip explained it's about people who are "kind of vampires."
One Direction garnered comparisons to the Backstreet Boys simply for being a popular boy band. Furthermore, One Direction ripped off the Backstreet Boys' "I Want It That Way" without shame.
Britney Spears has put out quite a few ballads over the years. The "…Baby One More Time" star could release a compilation album of slower songs if she wanted to.