Justin Bieber

This mash-up of 2015's biggest hits is the best thing ever!

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Rex Features

This might not sound all that exciting, but trust us, you WILL be impressed. Our favourite mixer, DJ Earworm, has created a United States of Pop mega-mix, and it's AWESOME! Like, seriously good.

Image may contain Fashion Clothing Apparel Justin Bieber Human and Person
Rex Features

Titled "50 Shades Of Pop" the mash-up features music by Adele (but of course!), The Weeknd, Justin Bieber, Rihanna, Taylor Swift, Ellie Goulding, Demi Lovato, Selena Gomez, Drake, and many many more.

Now take a trip down memory lane...