Mumford & Sons wrapped up a completely unpredictable Grammy Awards with perhaps the most surprising win of the night, taking home album of the year for Babel.
It was an event that even shocked the London folk-rockers.
"We figured we weren't going to win anything because The Black Keys have been sweeping up all day, rightfully so," Marcus Mumford said.
Dan Auerbach of The Black Keys ended up the night's top winner with four trophies, including producer of the year and three rock category victories with bandmate Patrick Carney.
But it was hardly a clean sweep as The Recording Academy's thousands of voters spread the love for the year's top singles.
Fun. took home major awards best new artist, in something of an upset over Frank Ocean, and song of the year for the transcendent anthem We Are Young, featuring Janelle Monae.
"I didn't think we were going to win this one," lead singer Nate Ruess said after the best new artist win. "Frank Ocean. The Lumineers. Everybody, amazing."
Like Mumford & Sons, Gotye busted up the predictions, taking record of the year for 2012's top-selling single, the haunting Somebody That I Used To Know, featuring Kimbra, and finished with three awards.
Prince, in hood and sunglasses and carrying a sparkly silver cane, presented him with the record of the year trophy and the Australian paid tribute to The Purple One's influence.
"A little bit lost for words, to receive an award from the man standing behind us with the cane," Gotye said. "Many years listening to this man's music growing up and a big reason I was inspired to make music. Thank you."
Jay-Z and Kanye West had three wins - sharing one award with Ocean - along with Skrillex, and a slew of nominees had two wins apiece, including former best new artist winner Esperanza Spalding.
Ocean was shut out in the major categories, but took home two trophies, including best urban contemporary album. Only Chris Brown, with whom Ocean scuffled last month, remained seated as the 25-year-old R&B winner walked to the stage during a standing ovation. Ocean beat Brown, who attended with girlfriend Rihanna, in the category.
Ocean won also won best rap/sung collaboration for No Church in the Wild with fellow top nominees Jay-Z and West, and The-Dream. The win came after victories for Jay-Z and West for best rap song and best rap performance for ... in Paris, another Watch the Throne track.
Ocean also performed his song Forrest Gump, the love song written about a man that first started the buzz that led to his announcement that his first love was a man.
We Are Young helped fun. earn a starring role at these Grammys with nominations in all four major categories after the release of their first album, matched only by Christopher Cross in 1981, and six overall.
The band turned in a powerful early performance of Carry On as a downpour on stage began mid-song and guitarist Jack Antonoff got a kiss from girlfriend Girls creator Lena Dunham after winning.
The Black Keys took best rock performance for Lonely Boy during the main telecast and earlier in the day won best rock song for Lonely Boy and best rock album for El Camino. He also got an assist - but no trophy - on Dr. John's best blues album Locked Down, which he produced.
Other winners included Rihanna, Beyonce, Mumford & Sons and Taylor Swift, who opened the show as the Mad Hatter. Swift dressed in white top hat, tails, shorts and tall boots during the surreal version of her hummable hit We Are Never Ever Getting Back Together that included a troop of mime clowns and a guy on a tricycle with a flame-thrower attached.
The singer pretended to talk to the offending boyfriend on the phone: "I'm busy opening the Grammys and we're never getting back together."
Justin Timberlake debuted new tracks Suit & Tie with Jay-Z and Pusher Love in a performance that was broadcast in retro black and white.
Rihanna and the extended Marley family paid tribute to Bob Marley.
Sting and Bruno Mars helped each other out on their hits Locked Out of Heaven and Walking on the Moon.
Elton John and Ed Sheeran teamed on The A Team and Miguel and Wiz Khalifa joined forces on Adorn. Alicia Keys played drums during Maroon 5's Daylight, before Adam Levine's band backed her on Girl on Fire.
Jack White brought both his male and female bands on stage, tearing through Love Interruption and Freedom at 21 before a standing ovation from the crowd.
And Elton John, Mavis Staples, Brown, Mumford & Sons and Brittany Howard of Alabama Shakes paid tribute to the late Levon Helm with a spirited rendition of The Weight.
Adele won the first award of the night on the main telecast, taking home best pop solo performance for Set Fire to the Rain (Live), in one of the night's least-surprising moments - though the singer was somewhat taken aback.
"I just wanted to be part of the night, because I loved it last year, obviously," she said of winning a record-tying six awards in 2012.
Carrie Underwood won best country solo performance for Blown Away, Zac Brown Band won best country album for Uncaged and Kelly Clarkson turned in the night's most exuberant acceptance speech after winning best pop vocal album for Stronger.
After hugging much of the front row and momentarily getting stuck to Miranda Lambert's dress, Clarkson charged the stage with a giant smile.
"Miguel, I don't know who the hell you are, but we need to sing together," she said. "I mean, good God. That was the sexiest dancing I've ever seen."
Skrillex won best dance recording for Bangarang, featuring Sirah, best dance/electronica album for Bangarang and best remixed recording a year after winning those same awards in his first appearance at the Grammys.
"You know what, I thought I'd get used to it, but I tripped over every word when I was up there," Skrillex said of his acceptance speeches. "I felt like I just wanted a pool of ice water and just couldn't even breathe or think. It was crazy. I think it was even crazier than last year."
Celebrities rolled down the red carpet in the early afternoon under heavy police guard during a continued manhunt for an alleged cop killer.
Many stars showed a fair amount of skin - check out the Twitter pic of Ellen DeGeneres ogling Katy Perry's revealing dress - despite CBS's mandate that stars dress appropriately with butts, breasts and other sensitive areas covered adequately.
Nevertheless, Jennifer Lopez showed up on stage in a dress slit all the way to her hip.
"As you can see, I read the memo," Lopez joked.
Winners of the 2013 Grammy Awards:
Album of the year: Babel, Mumford & Sons
Record of the year: Somebody That I Used to Know, Gotye featuring Kimbra
Song of the year: We Are Young, fun
New artist: fun
Pop solo performance: Set Fire to the Rain (Live), Adele
Pop vocal album: Stronger, Kelly Clarkson
Rock performance: Lonely Boy, The Black Keys
Urban contemporary album: Channel Orange, Frank Ocean
Rap/sung collaboration: No Church in the Wild, Jay-Z, Kanye West featuring Frank Ocean, The-Dream
Country solo performance: Blown Away, Carrie Underwood
Country album: Uncaged, Zac Brown Band
Pop/duo group performance: Somebody That I Used to Know, Gotye featuring Kimbra
Traditional pop vocal album: Kisses on the Bottom, Paul McCartney
Rap performance: N(asterisk)(asterisk)(asterisk)(asterisk)s in Paris, Jay-Z, Kanye West
Rap song: N***s in Paris, Shawn Carter, Mike Dean, Chauncey Hollis, Kanye West
Rap album: Take Care, Drake
R&B performance: Climax, Usher
Traditional R&B performance: Love on Top, Beyonce
R&B song: Adorn, Miguel Pimentel
R&B album: Black Radio, Robert Glasper Experiment
Rock song: Lonely Boy, The Black Keys
Rock album: El Camino, The Black Keys
Hard rock/metal performance: Love Bites (So Do I), Halestorm
Alternative music album: Making Mirrors, Gotye
Dance recording: Bangarang, Skrillex featuring Sirah
Dance/electronica album: Bangarang, Skrillex
Latin pop album: MTV Unplugged Deluxe Edition, Juanes
Latin rock, urban or alternative album: Imaginares, Quetzal
Latin jazz album: Ritmo!, The Clare Fisher Latin Jazz Big Band
Tropical Latin album: Retro, Marlow Rosado Y La Riquena
Country duo/group performance: Pontoon, Little Big Town
Country song: Blown Away, Josh Kear, Chris Tompkins
Gospel song: Go Get It, Mary Mary
Gospel album: Gravity, Lecrae
Blues album: Locked Down, Dr. John
Folk album: The Goat Rodeo Sessions, Yo-Yo Ma, Stuart Duncan, Edgar Meyer, Chris Thile
Americana album: Slipstream, Bonnie Raitt
Bluegrass album: Nobody Knows You, Steep Canyon Rangers
Reggae album: Rebirth, Jimmy Cliff
World music album: The Living Room Sessions Part 1, Ravi Shankar
Children's album: Can You Canoe?, The Okee Dokee Brothers
Spoken word album: Society's Child: My Autobiography, Janis Ian
Comedy album: Blow Your Pants Off, Jimmy Fallon
New age album: Echoes of Love, Omar Akram
Jazz vocal album: Radio Music Society, Esperanza Spalding
Jazz instrumental album: Unity Band, Pat Metheny Unity Band
Large jazz ensemble album: Dear Diz (Every Day I Think of You), Arturo Sandoval
Pop instrumental album: Impressions, Chris Botti
Compilation soundtrack album: Midnight in Paris, various artists
Score soundtrack album: The Girl With the Dragon Tattoo, Trent Reznor, Atticus Ross
Song written for visual media: Safe & Sound (From The Hunger Games), Taylor Swift, John Paul White, Joy Williams
Musical theater album: Once: A New Musical, Steve Kazee, Cristin Milioti
Producer of the year, classical: Blanton Alspaugh
Producer of the year, non-classical: Dan Auerbach
Instrumental composition: Mozart Goes Dancing, Chick Corea
Orchestral performance: Adams: Harmonielehre & Short Ride in a Fast Machine, Michael Tilson Thomas (San Francisco
Opera recording: Wagner, Der Ring des Nibelungen, James Levine and Fabio Luisi
Choral performance: Life & Breath: Choral Works by Rene Clausen, Charles Bruffy
Short-form music video: We Found Love, Rihanna featuring Calvin Harris
Long-form music video: Big Easy Express, Mumford & Sons
Historical album: The Smile Sessions (Deluxe Box Set), Alan Boyd, Mark Linett, Brian Wilson, Dennis Wolfe