The Grammy Awards main show hasn't started just yet but the pre-show awards are indicating it's going to be a big night for Bruno Mars and Kendrick Lamar.

Lamar's Humble has already won 'Best Video', 'Best Rap Song' and 'Best Rap Performance'. Meanwhile, Mars is dominating the R&B categories winning 'Best R&B Album' for 24K Magic and 'Best R&B Performance' and 'Best R&B Song' for That's What I Like.

Foo Fighters, The Weeknd, The National and Ed Sheeran have also won awards in their respective categories.

The main show will hand out the big ones like Album, Song and Record of the Year. This early swing towards Mars and Lamar suggests it will be a big night for them.

Stay tuned. The awards handed out so far are below (via Pitchfork).

Producer of the Year, Non-Classical
Greg Kurstin

Best Pop Vocal Album
Ed Sheeran -  (Divide)

Best Traditional Pop Vocal Album
Various Artists - Tony Bennett Celebrates 90

Best Pop Duo/Group Performance
Portugal. The Man - “Feel It Still”

Best Country Song
Mike Henderson & Chris Stapleton, songwriters (Chris Stapleton) - “Broken Halos”

Best Country Duo/Group Performance
Little Big Town - “Better Man”

Best Country Solo Performance
Chris Stapleton - “Either Way”

Best Rap Song
K. Duckworth, Asheton Hogan & M. Williams II, songwriters (Kendrick Lamar) - “HUMBLE.”

Best Rap Performance
Kendrick Lamar - “HUMBLE.”

Best R&B Album
Bruno Mars - 24K Magic

Best Urban Contemporary Album
The Weeknd - Starboy

Best R&B Song
Christopher Brody Brown, James Fauntleroy, Ray Charles McCullough II, Philip Lawrence, Bruno Mars, Jeremy Reeves, Ray Romulus, and Jonathan Yip, songwriters (Bruno Mars) - “That's What I Like”

Best Traditional R&B Performance
Childish Gambino - “Redbone”

Best R&B Performance
Bruno Mars - “That's What I Like”

Best Alternative Music Album
The National - Sleep Well Beast

Best Rock Album
The War On Drugs - A Deeper Understanding

Best Rock Song
Foo Fighters, songwriters (Foo Fighters) - “Run”

Best Metal Performance
Mastodon - “Sultan’s Curse”

Best Rock Performance
Leonard Cohen - “You Want It Darker”

Best Children's Album
Lisa Loeb - Feel What U Feel

Best World Music Album
Ladysmith Black Mambazo - Shaka Zulu Revisited: 30th Anniversary Celebration

Best Reggae Album
Damian “Jr. Gong” Marley - Stony Hill

Best Regional Roots Music Album
Lost Bayou Ramblers - Kalenda

Best Folk Album
Aimee Mann - Mental Illness

Best Contemporary Blues Album
Taj Mahal & Keb’ Mo’ - TajMo

Best Traditional Blues Album
The Rolling Stones - Blue & Lonesome

Best Bluegrass Album (tie)
The Infamous Stringdusters - Laws of Gravity
Rhonda Vincent and the Rage - All the Rage - In Concert Volume One [Live]

Best Americana Album
Jason Isbell And The 400 Unit - The Nashville Sound

Best American Roots Song
Jason Isbell, songwriter (Jason Isbell And The 400 Unit) - “If We Were Vampires”

Best American Roots Performance
Alabama Shakes - “Killer Diller Blues”

Best Roots Gospel Album
Reba McEntire - Sing It Now: Songs of Faith & Hope

Best Contemporary Christian Music Album
Zach Williams - Chain Breaker

Best Gospel Album
CeCe Winans - Let Them Fall in Love

Best Contemporary Christian Music Performance/Song
Hillsong Worship; Ben Fielding & Brooke Ligertwood, songwriters - “What a Beautiful Name”

Best Gospel Performance/Song
CeCe Winans; Dwan Hill & Alvin Love III, songwriters - “Never Have to Be Alone”

Best Latin Jazz Album
Pablo Ziegler Trio - Jazz Tango

Best Large Jazz Ensemble Album
Christian McBride Big Band - Bringin' It

Best Jazz Instrumental Album
Billy Childs - Rebirth

Best Jazz Vocal Album
Cécile McLorin Salvant - Dreams and Daggers

Best Improvised Jazz Solo
John McLaughlin, soloist - “Miles Beyond”

Best Contemporary Classical Composition
Jennifer Higdon, composer (Roberto Díaz, Giancarlo Guerrero & Nashville Symphony) - “Viola Concerto”

Best Classical Compendium
Giancarlo Guerrero, conductor. Tim Handley, producer (James Button, Roberto Díaz & Nashville Symphony) - Higdon: All Things Majestic, Viola Concerto & Oboe Concerto

Best Classical Solo Vocal Album
Nicholas Phan; Myra Huang, accompanist. - Barbara Hannigan (Ludwig Orchestra) - Crazy Girl Crazy

Best Classical Instrumental Solo
Daniil Trifonov - Transcendental

Best Chamber Music/Small Ensemble Performance
Patricia Kopatchinskaja & The Saint Paul Chamber Orchestra - “Death & The Maiden”

Best Choral Performance
Donald Nally, conductor (The Crossing; PRISM Quartet) - “Bryars: The Fifth Century”

Best Opera Recording
Hans Graf, conductor. Hans Graf & Brad Sayles, producers. Anne Schwanewilms & Roman Trekel, soloists (Chorus Of Students And Alumni, Shepherd School Of Music, Rice University & Houston Grand Opera Children's Chorus; Houston Symphony) - “Berg: Wozzeck”

Best Orchestral Performance
Manfred Honeck, conductor (Pittsburgh Symphony Orchestra) - “Shostakovich: Symphony No. 5; Barber: Adagio”

Producer of the Year, Classical
David Frost

Best Engineered Album, Classical Mark Donahue, engineer (Manfred Honeck & Pittsburgh Symphony Orchestra)- 'Shostakovish: Symphony No. 5; Barber: Adagio

Best New Age Album
Peter Kater - Dancing on Water

Best Song Written for Visual Media
Lin-Manuel Miranda, songwriter (Auli’i Cravalho) - “How Far I'll Go”

Best Score Soundtrack for Visual Media
Justin Hurwitz, composer - La La Land

Best Compilation Soundtrack for Visual Media (Various Artists) - La La Land

Best Musical Theater Album Dear Evan Hansen

Best Spoken Word Album (Includes Poetry, Audio Books, & Storytelling) Carrie Fisher - The Princess Diarist

Best Tropical Latin Album Rubén Blades Con Roberto Delgado & Orquesta - Salsa Big Band

Best Regional Mexican Music Album (Including Tejano) Aida Cuevas - Arriero Somos Versiones Acsticas

Best Latin Rock, Urban or Alternative Album Residente - Residente

Best Latin Pop Album
Shakira - El Dorado

Best Surround Sound Album
Jim Anderson, surround mix engineer; Darcy Proper, surround mastering engineer; Jim Anderson & Jane Ira Bloom, surround producers (Jane Ira Bloom) - Early Americans

Best Remixed Recording
Dennis White, remixer (Depeche Mode) - “You Move (Latroit Remix)”

Best Engineered Album, Non-Classical
Serban Ghenea, John Hanes & Charles Moniz, engineers; Tom Coyne, mastering engineer (Bruno Mars) - 24K Magic

Best Historical Album
Robert Russ, compilation producer; Martin Kistner & Andreas K. Meyer, mastering engineers (Leonard Bernstein) - Leonard Bernstein - The Composer

Best Album Notes
Lynell George, album notes writer (Otis Redding) - Live at The Whisky A Go Go: The Complete Recordings

Best Boxed or Special Limited Edition Package
Lawrence Azerrad, Timothy Daly & David Pescovitz, art directors (Various Artists) - The Voyager Golden Record: 40th Anniversary Edition

Best Recording Package (tie)
Sasha Barr, Ed Steed & Josh Tillman, art directors (Father John Misty) - Pure Comedy (Deluxe Edition)
Carlos Dussan, Juliana Jaramillo, Juan Martinez & Claudio Roncoli, art directors (Magín Díaz) - El Orisha De La Rosa

Best Arrangement, Instruments and Vocals
Randy Newman, arranger (Randy Newman) - “Putin”

Best Arrangement, Instrumental or A Cappella
John Williams, arranger (John Williams) - “Escapades for Alto Saxophone and Orchestra From Catch Me If You Can”

Best Instrumental Composition
Arturo O'Farrill, composer (Arturo O'Farrill & Chucho Valdés) - “Three Revolutions”

Best Music Film
Various Artists - The Defiant Ones

Best Music Video
Kendrick Lamar - “HUMBLE.”

Best Contemporary Instrumental Album
Jeff Lorber Fusion - Prototype

Best Dance/Electronic Album
Kraftwerk - 3-D the Catalogue

Best Dance Recording
LCD Soundsystem - “Tonite”