Justin Timberlake won song of the year for "Can't Stop the Feeling!"

The 2017 iHeartRadio Music Awards started with Justin Timberlake speaking about inclusion and dedicating his award to children who feel different, and ended with a rousing performance by Bruno Mars that included crowd participation from Florida Georgia Line, Thomas Rhett, Ty Dolla $ign, Heidi Klum and more.

Timberlake won the night's first award, song of the year, for "Can't Stop the Feeling!" - his massive No.1 hit that was nominated for an Academy Award last month.

"I wrote this song because I wanted it to be about inclusion, about being together. And so I guess I want to take this opportunity and speak to young people right now 'cause there's a lot of you looking at me, if you are black or you are brown or you are gay or you're a lesbian or you are trans, or maybe you're just a sissy singing boy from Tennessee, anyone that is treating you unkindly, it's only because they are afraid or have been taught to be afraid of how important you are," Timberlake, who is from Memphis, said to the crowd at the Forum in Inglewood, California.

"It's been a really, really tough year, but I hope that somehow this song made the summer a little bit better for you guys despite everything that's been going on," Halsey said onstage.

Martin and his band Coldplay won best tour. He accepted the award onstage with three people - not his band mates - but child background dancers who performed with Katy Perry at the top of the show.

"Hello, we are Coldplay. Thank you so much for this award. We love our job and we love our fans," the young girl read from a paper. "You wouldn't believe it, but we are in our late 30s."

Perry, in a bright red blazer, hot pink pants and a short blond haircut, kicked off the show with kid dancers dressed as laborers when she sang "Chained to the Rhythm." Miley Cyrus was ecstatic as she introduced her younger sister, Noah Cyrus, to the stage for a performance. Miley and her parents sang along as Noah performed "Make Me (Cry)" alongside English singer-producer Labrinth.

Pop singer Shawn Mendes, rapper Big Sean and Thomas Rhett - who won country artist of the year - also performed at the show, attended by John Legend, Demi Lovato, DJ Khaled, Ansel Elgort, Macklemore, Jhene Aiko, Joe Jonas and more.

Drake, who didn't attend the show, was the top nominee with 12. Fifth Harmony, whose band member Camila Cabello recently left the group, won best fan army.

Some of the winners were announced on Snapchat, including Rihanna (R&B album of the year), Green Day (rock song of the year) and twenty one pilots (alternative rock artist of the year).

Ryan Seacrest hosted the two-hour show, which aired live on TBS, TNT and truTV.

A list of winners follows.

• Song of the Year

  "Can't Stop The Feeling" – Justin Timberlake (WINNER)
  "Cheap Thrills" – Sia featuring Sean Paul
  "Closer" – The Chainsmokers featuring Halsey
  "One Dance" – Drake featuring Wizkid and Kyla
  "Stressed Out" – Twenty One Pilots

• Female Artist of the Year

  Adele (WINNER)
  Ariana Grande
  Rihanna
  Selena Gomez
  Sia

• Male Artist of the Year

  Justin Bieber (WINNER)
  Drake
  Luke Bryan
  Shawn Mendes
  The Weeknd
• Best New Artist

  The Chainsmokers (WINNER)
  Chance The Rapper
  Bryson Tiller
  Kelsea Ballerini
  The Strumbellas
  Joss Favela
  CNCO

• Best Duo/Group of the Year

  Twenty One Pilots (WINNER)
  Coldplay
  DNCE
  Florida Georgia Line
  The Chainsmokers
   

• Pop Album of the Year

  25 - Adele (WINNER)
• Alternative Rock Song of the Year

  "Heathens" – Twenty One Pilots (WINNER)
  "Bored to Death" – Blink-182
  "Dark Necessities" – Red Hot Chili Peppers
  "Ride" – Twenty One Pilots
  "Trouble" - Cage the Elephant

• Alternative Rock Artist of the Year

  Twenty One Pilots (WINNER)
  Blink-182
  Cage The Elephant
  Coldplay
  The Strumbellas

• Alternative Rock Album of the Year

  Blurryface - twenty one pilots (WINNER)
• Rock Song of the Year

  "Bang Bang" – Green Day (WINNER)
  "Dark Necessities" – Red Hot Chili Peppers
  "Take Me Down" – The Pretty Reckless
  "The Devil's Bleeding Crown" – Volbeat
  "The Sound of Silence" – Disturbed

• Rock Artist of the Year

  Disturbed (WINNER)
  Five Finger Death Punch
  Red Hot Chili Peppers
  Shinedown
  Volbeat

• Rock Album of the Year

  Hardwired... to Self-Destruct - Metallica (WINNER)
• Country Song of the Year

  "Somewhere On A Beach" – Dierks Bentley (WINNER)
  "Church Bells" – Carrie Underwood
  "Snapback" – Old Dominion
  "T-Shirt" – Thomas Rhett
  "You Should Be Here" – Cole Swindell

• Country Artist of the Year

  Thomas Rhett (WINNER)
  Carrie Underwood
  Jason Aldean
  Keith Urban
  Luke Bryan
   

• Country Album of the Year

  Traveller - Chris Stapleton (WINNER)
• Dance Song of the Year

  "Closer" – The Chainsmokers featuring Halsey (WINNER)
  "Cold Water" – Major Lazer featuring Justin Bieber and Mo
  "Don't Let Me Down" – The Chainsmokers featuring Daya
  "I Took A Pill in Ibiza" – Mike Posner
  "Let Me Love You" – DJ Snake featuring Justin Bieber

• Dance Artist of the Year

  The Chainsmokers (WINNER)
  Calvin Harris
  DJ Snake
  Flume
  Major Lazer
   

• Dance Album of the Year

  Collage - The Chainsmokers (WINNER)
• Hip-Hop Song of the Year

  "One Dance" – Drake featuring Wizkid and Kyla (WINNER)
  "All The Way Up" – Fat Joe and Remy Ma featuring French Montana and Infared
  "Controlla" – Drake
  "For Free" – DJ Khaled featuring Drake
  "Panda" – Desiigner

• Hip-Hop Artist of the Year

  Drake (WINNER)
  Desiigner
  DJ Khaled
  Future
  J. Cole

• R&B Song of the Year

  "Work" – Rihanna featuring Drake (WINNER)
  "Needed Me" – Rihanna
  "Exchange" – Bryson Tiller
  "No Limit" – Usher featuring Young Thug
  "Sorry" – Beyonce
• R&B Artist of the Year

  Bryson Tiller (WINNER)
  Beyonce
  Rihanna
  The Weeknd
  Usher

• R&B Album of the Year

  Anti - Rihanna (WINNER)

• Latin Song of the Year

  "Duele El Corazon" – Enrique Iglesias featuring Wisin (WINNER)
  "Ay Mi Dios" – IAmChino featuring Pitbull, Yandel and El Chacal
  "De Pies A Cabeza" – Mana featuring Nicky Jam
  "La Carretera" – Prince Royce
  "Ya Me Entere" – Reik featuring Nicky Jam
• Latin Artist of the Year

  Nicky Jam (WINNER)
  Enrique Iglesias
  J Balvin
  Prince Royce
  Yandel

• Latin Album of the Year

  Energía - J Balvin (WINNER)

• Best New Rock/Alternative Rock Artist

  The Strumbellas (WINNER)
  Foals
  Kaleo
  Nathaniel Rateliff & The Night Sweats
  Red Sun Rising
   
• Best New Country Artist

  Kelsea Ballerini (WINNER)
  Chris Lane
  Chris Stapleton
  Granger Smith
  Maren Morris

• Best New Hip-Hop Artist

  Chance the Rapper (WINNER)
  Desiigner
  D.R.A.M.
  Kent Jones
  Kevin Gates

• Best New Latin Artist

  CNCO (WINNER)
  Carlos Rivera
  Christian Daniel
  IAmChino
  Sofia Reyes
• Best New R&B Artist

  Bryson Tiller (WINNER)
  Belly
  Dreezy
  Kayla Brianna
  Ro James

• Best New Pop Artist

  The Chainsmokers (WINNER)
  Alessia Cara
  Daya
  Lukas Graham
  ZAYN

• Producer of the Year

  Benny Blanco (WINNER)
  Greg Kurstin
  Max Martin
  Mike Elizondo
  The Chainsmokers
• Best Lyrics

  "Love Yourself" – Justin Bieber (WINNER)
  "7 Years" – Lukas Graham
  "Came Here to Forget" – Blake Shelton
  "Cheap Thrills" – Sia featuring Sean Paul
  "Closer" – The Chainsmokers featuring Halsey
  "Heathens" – Twenty One Pilots
  "Scars to Your Beautiful" – Alessia Cara
  "Send My Love (To Your New Lover)" – Adele
  "Too Good" – Drake featuring Rihanna
   "You Should Be Here" – Cole Swindell

• Best Collaboration

  "Work" – Rihanna featuring Drake (WINNER)
  "Cheap Thrills" – Sia featuring Sean Paul
  "Closer" – The Chainsmokers featuring Halsey
  "Don't Let Me Down" – The Chainsmokers featuring Daya
  "This Is What You Came For" – Calvin Harris featuring Rihanna
   

• Best Cover Song

  "Ex's and Oh's" – Fifth Harmony (WINNER)
  "All I Ask" – Bruno Mars
  "Fast Car" – Justin Bieber
  "Hands to Myself" – DNCE
  "Here" – Shawn Mendes
  "How Will I Know" – Ariana Grande
  "Love on the Brain" – Kelly Clarkson
  "Purple Rain" – Jennifer Hudson and the cast of The Color Purple
  "Sound of Silence" – Disturbed
  "Too Good" – Zara Larsson
• Best Song From a Movie

  "Girls Talk Boys" – 5 Seconds of Summer (Ghostbusters) (WINNER)
  "Can't Stop the Feeling" – Justin Timberlake (Trolls)
  "Falling for You" – Ellie Goulding (Bridget Jones's Baby)
  "Heathens" – Twenty One Pilots (Suicide Squad)
  "Just Like Fire" – P!nk (Alice Through the Looking Glass)

• Best Music Video

  "Pillowtalk" – ZAYN (WINNER)
  "Can't Stop the Feeling" – Justin Timberlake
  "Don't Let Me Down" – The Chainsmokers featuring Daya
  "Formation" – Beyonce
  "Hasta El Amanecer" – Nicky Jam
  "Heathens" – Twenty One Pilots
  "Hymn for the Weekend" – Coldplay
  "I Took aA Pill in Ibiza" – Mike Posner
  "Side to Side" - Ariana Grande featuring Nicki Minaj
  "This Is What You Came For" – Calvin Harris featuring Rihanna
  "Work" – Rihanna featuring Drake
  "Work From Home" – Fifth Harmony featuring Ty Dolla Sign

• Best Underground Alternative Band

  Pierce the Veil (WINNER)
  Hey Violet
  PVRIS
  Sleeping With Sirens
  Tonight Alive

   
• Social Star Award

  Jack and Jack from Snapchat (WINNER)
  Alex Aiono from YouTube
  Baby Ariel from Musical.ly
  Emma McGann from YouNow
  Hailey Knox from YouNow
  Jacob Sartorius from Musical.ly
  Marcus Perez from Facebook
  Steph Clavin from Instagram
  Todrick Hall from YouTube
  xYego from Smule

• Best Fan Army

  Fifth Harmony – Harmonizers (WINNER)
  5 Seconds of Summer – 5SOSFam
  Ariana Grande – Arianators
  Beyonce – Beyhive
  Britney Spears – Britney Army
  Demi Lovato – Lovatics
  Justin Bieber – Beliebers
  Katy Perry – KatyCats
  Lady Gaga – Little Monsters
  Rihanna – Rihanna Navy
  Selena Gomez – Selenators
  Shawn Mendes – Mendes Army
  Twenty One Pilots – #twentyonepilots

• Regional Mexican Song of the Year

  "Solo Con Verte" – Banda Sinaloense MS de Sergio Lizarraga (WINNER)
  "Amor Del Bueno" – Calibre 50
  "Cicatrices" – Regulo Caro
  "Me Esta Gustando" – Banda Los Recoditos
  "Por Que Terminamos?" – Gerardo Ortiz
   
• Regional Mexican Artist of the Year

  Calibre 50 (WINNER)
  Banda El Recodo de Cruz Lizarraga
  Banda Los Recoditos
  Gerardo Ortiz
  Remmy Valenzuela

• Best New Regional Mexican Artist

  Joss Favela (WINNER)
  Adriel Favela
  Banda Los Sebastianes
  Cheyo Carrillo
  La Septima Banda

• Regional Mexican Album of the Year

  Recuerden Mi Estilo - Los Plebes Del Rancho De Ariel Camacho (WINNER)
• Best Tour

  A Head Full of Dreams Tour - Coldplay (WINNER)