From Adele to Taylor Swift, This Is the Only End of the Year Mashup You Need to Hear

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50 of the biggest hits in one, including The Weeknd and Justin Bieber!

There were a lot of jams this year. Like a looooooooot of jams this year.

Understandably, it's hard to keep track of them all. Enter "United State of Pop 2015 (50 Shades of Pop)," a mashup of the biggest songs of the year. Taylor Swift is featured most -- with four hits -- while Justin Bieber and The Weeknd come in a close second. But it all starts with Adele, which is appropriate since she has the biggest album of 2015. And maybe ever.

The mashup was made by DJ Earworm -- we can’t imagine how long it took to put together -- who has been creating “United State of Pop” mix since 2007, based on Billboard’s Hot 100 charts. In previous years, he’s only included 25 songs (check out 2014's mashup!), but this year he tackled 50.


WATCH: Britney Spears Shows Off Her Ballet Moves to Adele's 'Hello'

Here is a complete list of the songs that made it into the mashup:

Adele – “Hello”
AlunaGeorge & DJ Snake – “You Know You Like It”
Andy Grammer – “Honey, I'm Good”
Ariana Grande featuring The Weeknd – “Love Me Harder”
Big Sean feating E-40 – “I Don't F**k With You”
David Guetta featuring Nicki Minaj & Afrojack – “Hey Mama”
Demi Lovato – “Cool For The Summer”
Drake – “Hotline Bling”
Ed Sheeran – “Photograph”
Ed Sheeran – “Thinking Out Loud”
Ellie Goulding – “Love Me Like You Do”
Fall Out Boy – “Centuries”
Fetty Wap – “Trap Queen”
Fetty Wap featuring Remy Boyz – “679”
Fifth Harmony featuring Kid Ink – “Worth It”
Flo Rida featuring Sage The Gemini – “GDFR”
Jason Derulo – “Want To Want Me”
Justin Bieber – “Sorry”
Justin Bieber – “What Do You Mean”
Major Lazer featuring MO & DJ Snake – “Lean On”
Mark Ronson featuring Bruno Mars – “Uptown Funk”
Maroon 5 – “Sugar”
Meghan Trainor - “Lips Are Movin”
Meghan Trainor featuring John Legend – “Like I'm Gonna Lose You”
Natalie La Rose featuring Jeremih – “Somebody”
Nick Jonas – “Jealous”
Nicki Minaj featuring Drake & Lil Wayne – “Truffle Butter”
Omarion featuring Chris Brown & Jhene Aiko – “Post to Be”
OMI – “Cheerleader (Felix Jaehn Remix)”
One Direction – “Drag Me Down”
Pitbull featuring Ne-Yo – “Time Of Our Lives”
R. City featuring Adam Levine – “Locked Away”
Rachel Platten – “Fight Song”
Rihanna – “Bitch Better Have My Money”
Rihanna, Kanye West & Paul McCartney – “FourFiveSeconds”
Sam Smith – “I'm Not the Only One”
Selena Gomez featuring A$AP Rocky – “Good For You”
Shawn Mendes – “Stitches”
Silentó – “Watch Me”
Skrillex & Diplo featuring Justin Bieber – “Where Are Ü Now”
Taylor Swift – “Blank Space”
Taylor Swift – “Style”
Taylor Swift – “Bad Blood”
Taylor Swift – “Wildest Dreams”
Tove Lo – “Talking Body”
Walk The Moon – “Shut Up And Dance”
Wiz Khalifa featuring Charlie Puth – “See You Again”
The Weeknd – “Earned It”
The Weeknd – “The Hills”
The Weeknd – “Can't Feel My Face”

In other music news, get the scoop on Rihanna's second annual Diamond Ball!