LOS ANGELES, CA - FEBRUARY 08: Singer Sam Smith (L) accepts the Best New Artist award from singer Taylor Swfit onstage during
Kevork Djansezian/Getty Images

After weeks of teasing its stellar lineup, the 2015 GRAMMYs are officially underway!

Between the pre-telecast awards show and the GRAMMY broadcast on CBS, here are the big winners in the major categories this year.

Album of the Year: Beck, Morning Phase

Record of the Year: Sam Smith, "Stay With Me"

Song of the Year: Sam Smith, "Stay With Me" (written by James Napier, William Phillips and Sam Smith)

Best New Artist: Sam Smith

Best Country Album: Miranda Lambert, Platinum

Best R&B Performance: Beyonce ft. Jay Z, "Drunk in Love"

Best Rock Album: Beck, Morning Phase

Best Pop Vocal Album: Sam Smith, In the Lonely Hour

Best Pop Solo Performance: Pharrell, "Happy (Live)"

Best Pop Duo/Group Performance: A Great Big World & Christina Aguilera, "Say Something"

Best Traditional Pop Vocal Album: Lady Gaga & Tony Bennett, Cheek to Cheek 

Best Dance Recording: Clean Bandit ft. Jess Glynne, "Rather Be" 

Best Dance/Electronic Album: Aphex Twin, Syro 

Best Remixed Recording, Non-Classical: "All of Me (Tiesto's Birthday Treatment Remix)"

Best Rock Performance: Jack White, "Lazaretto"

Best Rock Song: Paramore, "Ain't It Fun" (written by Paramore)

Best Metal Performance: Tenacious D, "The Last in Line"

Best Alternative Music Album: St. Vincent, St. Vincent

Best R&B Song: Beyonce ft. Jay Z, "Drunk in Love" (written by Shawn Carter, Rasool Diaz, Noel Fisher, Jerome Harmon, Beyoncé Knowles, Timothy Mosely, Andre Eric Proctor & Brian Soko)

Best Urban Contemporary Album: Pharrell, G I R L

Best R&B Album: Toni Braxton & Babyface, Love, Marriage & Divorce

Best Rap Performance: Kendrick Lamar, "i"

Best Rap/Sung Collaboration: Eminem ft. Rihanna, "The Monster"

Best Rap Song: Kendrick Lamar, "i" (written by K. Duckworth & C. Smith)

Best Rap Album: Eminem, The Marshall Mathers LP2

Best Country Solo Performance: Carrie Underwood, "Something in the Water" 

Best Country Duo/Group Performance: The Band Perry, "Gentle on My Mind" 

Best Country Song: Glen Campbell, "I'm Not Gonna Miss You"

Best Arrangement, Instrumental or A Cappella: Pentatonix, "Daft Punk" (arranged by Ben Bram, Mitch Grassi, Scott Hoying, Avi Kaplan, Kirstin Maldonado & Kevin Olusola)

Best Song Written for Visual Media: Kristen Anderson-Lopez & Robert Lopez, "Let It Go" 

Best Spoken Word Album (Includes Poetry, Audio Books & Storytelling): Joan Rivers, Diary of a Mad Diva

Best Comedy Album: "Weird Al" Yankovic, Mandatory Fun

Best Reggae Album: Ziggy Marley, Fly Rasta 

Best Music Film: 20 Feet From Stardom

Producer of the Year: Max Martin (for "Bang Bang," "Break Free," "Dark Horse," etc)

Best Music Video: Pharrell, "Happy"