Luke Bryan poses with host Jenny McCarthy on the set of 'Dirty, Sexy, Funny with Jenny McCarthy' at the SiriusXM on Aug. 11, 2015 in New York City.

With just one day left on the calendar, the world is ready to say hello to a brand new year with the help of some old friends, Ryan Seacrest and Jenny McCarthy, who will count down the final hours of 2015 on Dick Clark’s New Year’s Rockin’ Eve with Ryan Seacrest on ABC.

Thursday night’s (Dec. 31) broadcast promises to be an epic evening with 21 acts performing, and Billboard has a sneak peek with the full Dick Clark's New Year’s Rockin’ Eve playlist.

“It’s amazing,” McCarthy tells Billboard. “If you’re a country fan, Times Square is the place to be.”

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The lineup includes American Idol and country superstar Carrie Underwood in Times Square, joined by Luke Bryan, Wiz Khalifa and Charlie Puth, and Demi Lovato. Fergie will toast the evening on the other coast by hosting the Billboard Hollywood Party, which boasts performances by One Direction, 5 Seconds of Summer, Alessia Cara, Andy Grammer, DNCE, Elle King, Ellie Goulding, Fall Out Boy, Macklemore and Ryan Lewis, Nathan Sykes, Nick Jonas, OMI, Pentatonix, Rachel Platten, Tove Lo, and Walk the Moon. Jimmy Buffett is also set to wish Parrotheads everywhere a Happy New Year with a special performance live from the Barclays Center in Brooklyn.

In addition, Taylor Swift -- who headlined NYRE in Times Square last year -- will debut her new video for "Out of the Woods" on the broadcast.

In case you're keeping count, that’s an ambitious five-and-a-half hours worth of music with 38 performances.

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“It’s a really great group of people. The list goes on and on, and Fergie keeps the party going until 2 o'clock in the morning,” McCarthy said.

This is Seacrest’s 11th year hosting and McCarthy’s sixth. West Coast hostess Fergie will once again host the Billboard Hollywood Party for the 10th year in a row.

The show kicks off 8 p.m. EST on ABC.

Here is the full list:

Billboard Hollywood Party

5 Seconds of Summer: “She’s Kinda Hot,” “Hey Everybody,” “She Looks So Perfect”

Alessia Cara: “Here"

Andy Grammar: “Honey I’m Good” “Good To Be Alive”

DNCE: “Cake By The Ocean” “Toothbrush”

Elle King: “America’s Sweetheart” “Ex’s & Oh’s”

Ellie Goulding: “Love Me Like You Do,” “On My Mind”

Fall Out Boy: “Irresistible” “Uma Thurman”

Macklemore & Ryan Lewis: “Downtown”

Nathan Sykes: “Over and Over Again”

Nick Jonas: “Jealous,” “Chains,” “Levels”

OMI: “Cheerleader” “Hula Hoop”

One Direction: “Drag Me Down,” “Perfect,” & “History”

Pentatonix: “Can’t Sleep Love” “Cracked”

Rachel Platten: “Stand By You” “Fight Song”

Tove Lo: “Talking Body” & “Moments”

Walk The Moon: “Shut Up and Dance” “Work This Body”

Times Square

Wiz Khalifa w/ Charlie Puth: “See You Again”

Demi Lovato: “Cool For The Summer” “Confident”

Luke Bryan: Medley “Move” + “That’s My Kinda Night”

Carrie Underwood: Medley “Smoke Break” + “Heartbeat” + “Before He Cheats”

Other

Jimmy Buffett: “Margaritaville” from Brooklyn

Taylor Swift: World Premiere of “Out of the Woods” video