"I don't know what I was thinking when I wrote the chorus to this song," joked lead singer Nate Ruess, 30, when accepting the award for Song of the Year. "This is in HD, everyone can see our faces, and we are not very young."
Gotye won Record of the Year for "Somebody That I Used to Know," an award presented by Prince.
"Many years listening to this man's music growing up inspired me to make music," Gotye said as he accepted the award. "I just want to thank everybody who puts great energy into the world making music."
Mumford & Sons won Album of the Year for "Babel," demonstrating that voters in the Recording Academy were willing to spread the love among many nominees unlike last year, when Adele won Album of the Year, Record of the Year and Song of the Year. Mumford & Sons also won best long-form video for "Big Easy Express." Marcus Mumford accepted the award from Adele.
"Didn't get a look in last year because she was nominated," he joked. "There are a few of us [British artists] out there and the Grammys have opened their arms to us."
Best Urban Contemporary Album went to Frank Ocean's "Channel Orange."
"So I hear the way to disarm audiences is to imagine them naked. I don't want to do that. I want to imagine you in tuxes and looking fancy and all that," said Ocean. He also won for Rap/Sung Collaboration for "No Church in the Wild," with Jay-Z, Kanye West and The Dream. Jay-Z and West picked up their first two Grammys of the night when their track "N****s in Paris" won for Best Rap Performance and Best Rap Song.
Jay-Z and Kanye West each had three wins sharing one award with Ocean as did electronic dance music artist Skrillex. Many nominees won two awards, including former Best New Artist winner Esperanza Spalding.
Taylor Swift opened the televised ceremony with an Alice in Wonderland-inspired spectacle of "We Are Never Ever Getting Back Together," followed by Ed Sheeran and Sir Elton John performing a duet on Sheeran's "The A Team," nominated for Song of the Year. (Interestingly, Sheeran will open this summer for Swift's "Red" tour, but Sunday the roles were reversed.)
In an evening of generally lackluster performances, highlights included Jack White, Kelly Clarkson's homage to Carole King and Patti Page, and an all-star tribute to the late drummer Levon Helm of The Band, featuring Zac Brown, Brittany Howard of Alabama Shakes, Mumford & Sons, Mavis Staples and T-Bone Burnett.
List of televised Grammy Awards winners
List of awards presented during Sunday's telecast of the 55th annual Grammy Awards at Staples Center:
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. Grammy audience down, still 2nd highest since 1993
While the Grammy Awards couldn't come close to the freakishly high ratings generated in 2012 because of Whitney Houston's death and Adele's smashing success, this year's show had the second-largest audience for the program since 1993.
The Nielsen company said Monday that music's annual awards show was seen by 28.4 million people Sunday night on CBS.
The Grammys this year were packed with high-powered musical moments and, in its awards, celebrated the industry's diversity rather than overwhelmingly honoring one artist. It also had a few water-cooler moments: Which boyfriend was Taylor Swift specifically dissing in her latest performance of "We Are Never Ever Getting Back Together"? Was Chris Brown flaunting his revived relationship with Rihanna?
The music academy's decision to turn the televised Grammys into more of a showcase than an awards show appears to be bearing fruit, too. The show's audience was nearly 2 million higher than the 26.7 million who watched in 2011. From 2005 to 2009, the Grammy Awards audience fluctuated from 17 million to 20 million viewers.
Last year, 39.9 million people tuned in to see how the industry would react to Houston's death just before the awards and celebrate the coronation of its hottest star, Adele, who won six Grammys.
This year's show featured the musical return of Justin Timberlake, collaborations honoring Bob Marley and Levon Helm, and performances by the majority of stars up for major awards.
The Grammys far outpaced the Emmys, which had 13.3 million viewers last September for its more traditional awards show, and the Golden Globes, which had 19.7 million viewers in January. The upcoming Oscars usually get more than 30 million viewers.
The Associated Press