Adele may be rolling deep with Grammy nominations

She likely won't get "21," but Adele is poised to take the biggest share of nods when the Grammy nominations are announced Wednesday nightThe British singer-songwriter has had a great year, thanks to her sophomore album, "21." The mournful album about a failed relationship is the year's best-selling disc with over 4.5 million copies sold. It has resulted in two smash singles, "Rolling in the Deep" and "Someone Like You."

The Recording Academy will likely add to Adele's achievements. She is a strong contender to get bids for album of the year and for song and/or record of the year for the searing groove "Rolling in the Deep."

But she's not the only favorite for top nominations. Taylor Swift's multiplatinum "Speak Now" is a possible contender for album of the year, as is Tony Bennett's "Duets II," which marked the 85-year-old's first album to debut at No. 1, making him the oldest artist to achieve that feat.

Lady Gaga's "Born This Way," which had the year's biggest debut with 1.1 million albums sold in its first week, could become her third straight disc to be nominated for album of the year. She was cited for "The Fame Monster" this year and for her debut, "The Fame," in 2010.

Then there's Kanye West. His "My Beautiful Dark Twisted Fantasy" was one of the most highly regarded albums of 2010, and is eligible for a nomination for album of the year. So is his collaboration with Jay-Z for "Watch the Throne," another contender in the category.

A handful of the nominations are scheduled to be revealed during the fourth annual Grammy nominations concert special, to air live from the Nokia Theatre in Los Angeles on CBS at 10 p.m. EST. Lady Gaga is slated to open and close the show.

Other performers include Katy Perry, who could get a record of the year nomination for her hit "Firework"; Rihanna, who could snag a few nominations, including album of the year for "Loud"; and The Band Perry, the country sibling trio likely to be up for best new artist. (Another strong contender for that category, Nicki Minaj, is scheduled to be a presenter on the special.)

The Band Perry, at rehearsals Tuesday night, were hopeful about getting a nomination.

"Our fingers are crossed. We kinda don't like to think too much about that kind of stuff on nights before nominations. We don't want to be a bad luck charm. I'll tell you what, it would be the cherry on top of a really wonderful year," said Kimberly Perry. "We actually just today got the news that we've been certified platinum. We've been high-fiving and celebrating all day. If we were honored to be nominated for best new artist, we would definitely be celebrating two days in a row.