Mariah Carey

In October 2011, Carey announced that she re-recorded her song "All I Want for Christmas Is You" with Justin Bieber as a duet for his Christmas album, Under the Mistletoe. On November 5, 2011, Carey and Bieber filmed a music video for the duet at the Macy's in New York City. On October 21, 2011, a pre-taped interview with Barbara Walters aired on ABC's 20/20, during the interview Carey and Cannon allowed the cameras to photograph/film twins Moroccan and Monroe for the first time. In November 2011, Carey was included in the remix to the mixtape single "Warning" by Uncle Murda; the remix also features 50 Cent and Young Jeezy. That same month, Carey announced that she and John Legend collaborated on a duet, "When Christmas Comes", which was originally part of Carey's 2010 holiday album Merry Christmas II You.
• 2012–present: American Idol and The Art of Letting Go
On March 1, 2012, Carey took the stage at New York City's Gotham Hall for a show, where only 50 tickets were made available to the public, as part of the Plot Your Escape concert series. This was Carey's first time performing since pregnancy and the 40-minute set included many of Carey's hits such as "Always Be My Baby", "Hero", "Obsessed", "We Belong Together", and a cover of Michael Jackson's "I'll Be There". She also performed a three song set at a special fundraiser for United States President Barack Obama held in New York's Plaza Hotel. The three songs she performed were "Hero", "We Belong Together", and a new song titled "Bring It On Home", which Carey wrote specifically for the event to show her support behind Obama's re-election campaign. In June 2012, Carey posted a photo that wrote, "MC Summer 2012", after the photo was posted, many fans speculated that new music will be released soon. "Triumphant (Get 'Em)", featuring American rappers Rick Ross and Meek Mill, was released in early August 2012 as a standalone single. It was co-written and co-produced by Carey, Jermaine Dupri, and Bryan-Michael Cox. In February 2013, Walt Disney Studios revealed that Carey recorded a song called "Almost Home", co-written and co-produced by Carey herself along with Simone Porter, Justin Gray, Lindsey Ray, Tor Erik Hermansen, and Mikkel Eriksen (a.k.a. Stargate) for the soundtrack of the film Oz the Great and Powerful. The video was directed by photographer David LaChapelle.
Carey joined the judging panel of American Idol for season twelve. Her salary was reported to be US$18 million. In November 2013, Carey revealed she hated working on American Idol and said, "It was like going to work every day in hell with Satan" with references to her on-set squabbles with fellow judge Nicki Minaj. Carey appeared in Lee Daniels' 2013 film The Butler, about a White House butler who served eight American Presidents over the course of three decades. On August 2, 2013, it was announced that Carey will guest voice-star as a redneck character on the adult animated series American Dad!, the episode slated to air on November 24, 2013, as part of the show's 10th season.