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Ludacris, Pete Wentz

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Sam Smith and Taylor Swift are the ones to beat!

The singers lead the pack of finalists at the 2015 Billboard Music Awards, which honor the year's most successful musicians in 41 categories.

Ludacris and Pete Wentz appeared on ABC's Good Morning America Tuesday to announce the finalists in five categories for the 2015 Billboard Music Awards. Ludacris and Chrissy Teigen will co-host the show May 17 from the MGM Grand Garden Arena in Las Vegas, and the event will air live on ABC at 8 p.m. ET. Teigen and Empire's Jussie Smollet revealed the remainder of the finalists via Twitter.

Fall Out Boy will perform "Uma Thurman" for the first time during the show.

Here are the 2015 Billboard Music Awards finalists:

Top Artist

Ariana Grande

One Direction

Katy Perry

Sam Smith

Taylor Swift

Top Male Artist

Drake

Pharrell Williams

Ed Sheeran

Sam Smith

Justin Timberlake

Top Female Artist

Iggy Azalea

Ariana Grande

Katy Perry

Taylor Swift

Meghan Trainor

Top 100 Songs

Iggy Azalea, "Fancy (feat. Charli XCX)"

John Legend, "All of Me"

Sam Smith, "Stay With Me"

Taylor Swift, "Shake It Off"

Meghan Trainor, "All About That Bass"

Top Billboard 200 Album

Maroon 5, V

Pentatonix, That's Christmas to Me

Ed Sheeran, X

Sam Smith, In the Lonely Hour

Taylor Swift, 1989

Top New Artist

5 Seconds of Summer

Iggy Azalea

Hozier

Sam Smith

Meghan Trainor

Top Duo/Group

5 Seconds of Summer

Florida Georgia Line

MAGIC!

Maroon 5

One Direction

Top Billboard 200 Artist

One Direction

Pentatonix

Ed Sheeran

Sam Smith

Taylor Swift

Top Hot 100 Artist

Iggy Azalea

Ariana Grande

Sam Smith

Taylor Swift

Meghan Trainor

Top Digital Songs Artist

Iggy Azalea

Ed Sheeran

Sam Smith

Taylor Swift

Meghan Trainor

Top Radio Songs Artist

John Legend

Maroon 5

Ed Sheeran

Sam Smith

Taylor Swift

Top Touring Artist

Lady Gaga

One Direction

Katy Perry

The Rolling Stones

Justin Timberlake

Top Social Artist

Justin Bieber

Miley Cyrus

Selena Gomez

Ariana Grande

Taylor Swift

Top Streaming Artist

Iggy Azalea

Ariana Grande

Nicki Minaj

Taylor Swift

Meghan Trainor

Top R&B Artist

Beyoncé

Chris Brown

John Legend

Trey Songz

Pharrell Williams

Top Rap Artist

Iggy Azalea

J. Cole

Drake

Nicki Minaj

Rae Sremmurd

Top Country Artist

Jason Aldean

Luke Bryan

Florida Georgia Line

Brantley Gilbert

Blake Shelton

Top Rock Artist

Bastille

Coldplay

Fall Out Boy

Hozier

Lorde

Top Latin Artist

J Balvin

Juan Gabriel

Enrique Iglesias

Prince Royce

Romeo Santos

Top Dance/Electronic Artist

Avicii

Clean Bandit

Disclosure

Calvin Harris

Lindsey Stirling

Top Christian Artist

Casting Crowns

Hillsong United

Lecrae

MercyMe

Newsboys

Top Soundtrack

The Fault in Our Stars

Fifty Shades of Grey

Frozen

Guardians of the Galaxy: Awesome Mix: Vol. 1

Into the Woods

Top R&B Album

Beyoncé, Beyoncé

Chris Brown, X

Michael Jackson, Xscape

John Legend, Love in the Future

Pharrell Williams, G I R L

Top Rap Album

J. Cole, 2014 Forest Hills Drive

Drake, If You're Reading This It's Too Late

Nicki Minaj, The Pinkprint

Iggy Azalea, The New Classic

Eminem, The Marshall Mathers LP 2

Top Country Album

Jason Aldean, Old Boots, New Dirt

Garth Brooks, Man Against Machine

Luke Bryan, Crash My Party

Brantley Gilbert, Just As I Am

Miranda Lambert, Platinum

Top Rock Album

AC/DC, Rock or Bust

The Black Keys, Turn Blue

Coldplay, Ghost Stories

Hozier, Hozier

Lorde, Pure Heroine

Top Latin Album

Juan Gabriel, Los Dúo

Enrique Iglesias, Sex and Love

Romeo Santos, Formula: Vol. 2

Santana, Corazon

Marc Anthony, 3.0

Top Dance/Electronic Album

Avicii, True

Disclosure, Settle

Calvin Harris, Motion

Skrillex, Recess

Lindsey Stirling, Shatter Me

Top Christian Album

Lecrae, Anomaly

Casting Crowns, Thrive

MercyMe, Welcome to the New

NEEDTOBREATHE, Rivers in the Wasteland

Chris Tomlin, Love Ran Red

Top Digital Song

Mark Ronson, "Uptown Funk! (feat. Bruno Mars)"

Sam Smith, "Stay With Me"

Taylor Swift, "Shake It Off"

Meghan Trainor, "All About That Bass"

Pharrell Williams, "Happy"

Top Radio Song

John Legend, "All of Me"

MAGIC!, "Rude"

Nico & Vinz, "Am I Wrong"

Sam Smith, "Stay With Me"

Pharrell Williams, "Happy"

Top Streaming Song (Audio)

Iggy Azalea, "Fancy (feat. Charli XCX)"

Hozier, "Take Me to Church"

John Legend, "All of Me"

Sam Smith, "Stay With Me"

Tove Lo, "Habits (Stay High)"

Top Streaming Song (Video)

Idina Menzel, "Let It Go"

Bobby Shmurda, "Hot Boy"

Taylor Swift, "Blank Space"

Taylor Swift, "Shake It Off"

Meghan Trainor, "All About That Bass"

Top R&B Song

Chris Brown, "Loyal (feat. Lil Wayne, French Montana, Too $hort & Tyga)"

Jason Derulo, "Talk Dirty (feat. 2 Chainz)"

Jeremih, "Don't Tell 'Em (feat. YG)"

John Legend, "All of Me"

Pharrell Williams, "Happy"

Top Rap Song

Iggy Azalea, "Fancy (feat. Charli XCX)"

Iggy Azalea, "Blak Widow (feat. Rita Ora)"

Big Sean, "I Don't F--k With You (feat. E-40)"

Nicki Minaj, "Anaconda"

Bobby Shmurda, "Hot Boy"

Top Country Song

Jason Aldean, "Burnin' It Down"

Luke Bryan, "Play It Again"

Sam Hunt, "Leave the Night On"

Florida Georgia Line, "This Is How We Roll (feat. Luke Bryan)"

Florida Georgia Line, "Dirt"

Chrissy Teigen, Jussie Smollet

Twitter

Top Rock Song

Bastille, "Pompeii"

Coldplay, "A Sky Full of Stars"

Fall Out Boy, "Centuries"

Hozier, "Take Me to Church"

Paramore, "Ain't It Fun"

Top Latin Song

J Balvin, "6 AM (feat. Farruko)"

Enrique Iglesias, "Bailando (feat. Descemer Bueno & Gente de Zona)"

Romeo Santos, "Eres Mía"

Romeo Santos, "Odio (feat. Drake)"

Romeo Santos, "Propuesta Indecente"

Top Dance/Electronic Song

Clean Bandit, "Rather Be (feat. Jess Glynne)"

Disclosure, "Latch (feat. Sam Smith)"

DJ Snake & Lil Jon, "Turn Down For What"

Ariana Grande, "Break Free (feat. Zedd)"

Calvin Harris, "Summer"

Top Christian Song

Francesca Battistelli,"He Knows My Name"

Hillsong United, "Oceans (Where Feet May Fail)"

MercyMe, "Greater"

Newsboys, "We Believe"

Carrie Underwood, "Something in the Water"

Billboard Chart Achievement Award (Fan Voted)

Iggy Azalea

Taylor Swift

Meghan Trainor

This isn't the first time Ludacris has emceed the show. "I had so much fun hosting the Billboard Music Awards last year and I can't wait to be back!" the "Burning Bridges" rapper told E! News in a statement last week.

Teigen, meanwhile, will host the show for the first time.

"If my extensive collection of all 53 Now That's What I Call Music compilations is any indication, I am both qualified and honored to join Ludacris in hosting this amazing show that spotlights the best music and artists of the year," the supermodel joked.

(Originally published on Tues., Apr. 7, 2015, at 5:55 AM PDT.)