From Best Rap Album to Producer of the Year, nearly every major award category for the 55th Grammy Awards had one or more UA artists in its ranks. Well-deserved congratulations go out to our UA Grammy nominees and winners for their hard work and dedication to the most critically acclaimed musical productions of 2012!

Here's a few of this year's Grammy-winning UA artists.

Album of The Year

Bob Ludwig (Mastering Engineer), Garrett Miller (Assistant Engineer)
Mumford & Sons — Babel

Song of the Year

Andrew Dawson (Engineer)
Fun. — "We Are Young"

Producer Of The Year, Non-Classical

Dan Auerbach
The Black Keys — El Camino
Dr. John — Locked Down
Hacienda — Savage
Hacienda — Shakedown

Best Pop Instrumental Album

Chuck Ainlay (Recording Engineer), Haydn Bendall (Recording Engineer), Eric Boulanger (Mastering Engineer)
Chris Botti — Impressions

Best Pop Vocal Album

Joe Baldridge (Engineer)
Kelly Clarkson — Stronger

Best Traditional Pop Vocal Album

Al Schmitt (Engineer, Mixing), Steve Genewick (Engineer), Elliot Scheiner (Engineer)
Paul McCartney — Kisses On The Bottom

Best Rock Album

The Black Keys (Producer)
The Black Keys — El Camino

Best Urban Contemporary Album

Malay (Producer) & Mark "Spike" Stent (Mix Engineer)
Frank Ocean — Channel Orange

Best R&B Album

Chris Athens (Mastering Engineer)
Robert Glasper Experiment — Black Radio

Best Rap Album

Ken Lewis (Recording Engineer), Just Blaze (Mix Engineer, Producer), Andrew Wright (Mix Engineer)
Drake — Take Care

Best Jazz Vocal Album

Paul Blakemore (Mastering Engineer)
Esperanza Spalding — Radio Music Society

Best Americana Album

Bob Ludwig (Mastering Engineer)
Bonnie Raitt — Slipstream

Best Historical Album

Mark Linett (Producer, Mastering Engineer)
The Beach Boys — The Smile Sessions