Brace yourself for this one: come 2018, it will have been 20 years since Steven Tyler first ripped your heart open with "I Don't Want to Miss a Thing."
Two decades since Britney Spears sauntered through a high school gymnasium singing "...Baby One More Time."
Yes, even 20 years since Will Smith first started "Getting Jiggy wit It."
These are just some of the countless other hits that will reach the big 2-0 after we ring in 2018: