Wiz Khalifa nominated for two Grammys

Wiz Khalifa is a Grammy nominee once again.

The Pittsburgh rapper is a contender for best rap album for his third major label record, "Blacc Hollywood," and best rap song for the single "We Dem Boyz." This is the fourth year in a row that Khalifa has been nominated. He is still waiting for his first win.

Wexford's own Christina Aguilera received a nomination for best pop duo/group performance for the song "Say Something" with A Great Big World.

The Pittsburgh Symphony Orchestra, under Manfred Honeck, received a nomination for best orchestral performance for its recording of Dvorák Symphony No. 8; Janacek: Symphonic Suite From Jenufa.

The nominees for the 57th annual Grammy Awards were announced throughout the day via Twitter on Friday and nominees for Album of the Year will be revealed Friday night on “A Very Grammy Christmas” special on CBS.

British singer Sam Smith received five nominations so far including song and record of the year for “Stay With Me,” as well as best new artist, along with Iggy Azalea, Haim, Bastille and Brandy Clark.

Mercer native and Nine Inch Nails frontman Trent Reznor is nominated with Atticus Ross for best score for the "Gone Girl" soundtrack. They won for "The Social Network" in 2011.

Here are some of the nominees:

Song Of The Year: Meghan Trainor, "All About That Bass"; Sia, "Chandelier"; Taylor Swift, "Shake It Off"; Sam Smith, "Stay With Me" (Darkchild Version); Hozier, "Take Me To Church."

Record of the Year: Iggy Azalea featuring Charli XCX "Fancy"; Sia "Chandelier"; Sam Smith "Stay With Me (Darkchild Version)"; Taylor Swift "Shake It Off"; Meghan Trainor "All About That Bass."

Best New Artist: Iggy Azalea, Bastille, Brandy Clark, Haim, Sam Smith.

Best Pop Duo/Group Performance: Iggy Azalea feat. Charli XCX, "Fancy"; Coldplay, "A Sky Full of Stars"; A Great Big World with Christina Aguilera, "Say Something"; Jessie J, Ariana Grande and Nicki Minaj, "Bang Bang"; Katy Perry feat. Juicy J, "Dark Horse."

Best Country Album: Dierks Bentley, "Riser"; Eric Church, "The Outsiders"; Brandy Clark, "12 Stories"; Miranda Lambert, "Platinum"; Lee Ann Womack, "The Way I'm Livin'."

Best Country Solo Performance: Eric Church, "Give Me Back My Hometown"; Hunter Hayes, "Invisible"; Miranda Lambert, "Automatic"; Carrie Underwood, "Something in the Water"; Keith Urban, "Cop Car."

Best Pop Vocal Album: Coldplay, "Ghost Stories"; Miley Cyrus, "Bangerz"; Ariana Grande, "My Everything"; Katy Perry, "Prism"; Ed Sheeran, "X"; Sam Smith, "In the Lonely Hour."

Best Rock Song: Paramore, "Ain't It Fun"; Beck, "Blue Moon"; The Black Keys, "Fever"; Ryan Adams, "Give Me Something Good"; Jack White "Lazaretto."

Best Rap Album: Eminem, "The Marshall Mathers LP 2"; Childish Gambino, "Because the Internet"; Iggy Azalea, "The New Classic"'; Common, "Nobody's Smiling"; Schoolboy Q, "Oxymoron"; Wiz Khalifa, "Black Hollywood."

Best Traditional Pop Album: Tony Bennett and Lady Gaga, "Cheek to Cheek"; Annie Lennox "Nostalgia"; Barry Manilow, "Night Songs"; Johnny Mathis, "Sending You a Little Christmas"; Barbra Streisand, "Partners."

Best Alternative Music Album: alt-J, "This Is All Yours"; Arcade Fire, "Reflektor"; Cage the Elephant, "Melophobia"; St. Vincent, "St. Vincent"; Jack White, "Lazaretto."

Best Score Soundtrack For Visual Media: Christophe Beck "Frozen"; Trent Reznor and Atticus Ross, "Gone Girl"; Alexandre Desplat, "The Grand Budapest Hotel"; Steven Price, "Gravity"; Thomas Newman "Saving Mr. Banks."

The 2015 Grammy Awards take place on Sunday, February 8, 2015 at the Staples Center in Los Angeles. The ceremony will be broadcast live on CBS.