Adele Gears up to Dazzle at ‘X-Factor’ Finale
British pop star Adele is all set to revamp the nature and tone of her performance at “The X-Factor” finale, after falling ill with a severe throat infection.

British singer Adele leads the list of nominees for the 39th annual American Music Awards, whose presentation ceremony will be conducted at the Nokia Theatre in Los Angeles on Sunday night.

Adele is this year's favorite artist with four nominations. She is closely followed by Katy Perry, Lady Gaga, Lil Wayne, Rihanna, Taylor Swift, and The Band Perry, each with three nominations. The 23-year-old Adele is not expected to perform Sunday because of a throat condition requiring surgery. Last month, she announced her absence from live performances for the rest of the year.

Canadian teen music sensation Justin Beiber owns a single nomination -- for best male rock or pop artist. The favorite male artist category includes Bruno Mars and Pitbull.

Nominees are determined by an online vote and the selection will be based on the Mediabase and BigChampagne's Ultimate Chart of winners. The chart is a ranked list of the most popular artists and songs based on a weighted combination of sales, radio/television broadcast, Internet streaming, and activity on social networks. Mediabase monitors more than 1,800 radio stations in 180 U.S. and Canadian markets.

The star-studded event is to be graced by celebrities such as Beiber, Perry, and Swift, as well as Jennifer Lopez, and Marc Anthony, and Selena Gomez.

Nominations in Major Categories

Artist of the Year -- Adele; Lady Gaga; Katy Perry; Lil Wayne; Taylor Swift

Favorite Album (Pop or Rock) -- Adele - "21"; Rihanna - "Loud"; Lady Gaga - "Born This Way"

Best Artist (Rap or Hip-Hop) -- Lil Wayne; Nicki Minaj; Kanye West

Best Album (Rap or Hip-Hop) -- Lil Wayne - "Tha Carter IV"; The Throne - "Watch the Throne"; Nicki Minaj - "Pink Friday"

Best Male Artist (Soul and R&B) -- Chris Brown; Trey Songz; Usher

Best Female Artist (Soul and R&B) -- Rihanna; Beyonce; Kelly Rowland

Best Album (Soul and R&B) -- Chris Brown - "F.A.M.E."; Rihanna - "Loud"; Beyonce - "4"

Best Male Artist (Country) -- Jason Aldean; Brad Paisley; Blake Shelton

Best Female Artist (Country) -- Sara Evans; Miranda Lambert; Taylor Swift

Best Group (Country) -- Zac Brown Band; Lady Antebellum; The Band Perry

Best Album (Country) -- Jason Aldean - "My Kinda Party"; Taylor Swift - "Speak Now"; The Band Perry - "The Band Perry"

Favourite Artist (Alternative Rock) -- Foo Fighters; Black Keys; Mumford & Sons

Favourite Artist (Adult Contemporary) -- Adele; Bruno Mars; Katy Perry

Favourite Artist (Latin) -- Pitbull; Enrique Iglesias; Jennifer Lopez