Who did Kanye West lose a Grammy to for Album Of The Year to?

Kanye West lost the Grammy for Album of the Year to Taylor Swift for her album "Fearless" at the 52nd Annual GRAMMY Awards in 2010. This loss became widely known due to Kanye's interruption of Taylor's acceptance speech, where he claimed that Beyoncé deserved the award for her album "I Am... Sasha Fierce."