2009 was a great year for pop music! Check out DJ Earworm’s mash-up of this year’s top 25 Billboard Hits. You’ll be dancing in your chair in no time. Happy 2010! See the list of songs after the jump!

• The Black Eyed Peas – BOOM BOOM POW
• Lady Gaga – POKER FACE
• Lady Gaga Featuring Colby O’Donis – JUST DANCE
• The Black Eyed Peas – I GOTTA FEELING
• Taylor Swift – LOVE STORY
• Flo Rida – RIGHT ROUND
• Jason Mraz – I’M YOURS
• Beyonce – SINGLE LADIES (PUT A RING ON IT)
• Kanye West – HEARTLESS
• The All-American Rejects – GIVES YOU HELL
• Taylor Swift – YOU BELONG WITH ME
• T.I. Featuring Justin Timberlake – DEAD AND GONE
• The Fray – YOU FOUND ME
• Kings Of Leon – USE SOMEBODY
• Keri Hilson Featuring Kanye West & Ne-Yo – KNOCK YOU DOWN
• Jamie Foxx Featuring T-Pain – BLAME IT
• Pitbull – I KNOW YOU WANT ME (CALLE OCHO)
• T.I. Featuring Rihanna – LIVE YOUR LIFE
• Soulja Boy Tell ‘em Featuring Sammie – KISS ME THRU THE PHONE
• Jay Sean Featuring Lil Wayne – DOWN
• Miley Cyrus – THE CLIMB
• Drake – BEST I EVER HAD
• Kelly Clarkson – MY LIFE WOULD SUCK WITHOUT YOU
• Beyonce – HALO
• Katy Perry – HOT N COLD