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"
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.)