Antonina Armato is an American songwriter, record producer, music producer and businesswoman.
 She is the co-founder and member of Rock Mafia, a record production/songwriting team.
 Antonina is credited for writing and producing for artists beginning in the 1990s.
 She has worked with Justin Bieber, Zedd, Gwen Stefani, Demi Lovato, Vanessa Hudgens, Miley Cyrus, Selena Gomez, No Doubt, Wyclef Jean, Green Day, Mariah Carey Ariana Grande, Flo Rida, Ellie Goulding and Tokio Hotel.
 Rock Mafia have sold over 100 million albums worldwide, and over 10 million albums alone in 2007.
Rock Mafia is an American record production/songwriting team, consisting of Tim James and Antonina Armato who have been active since the early 2000s.
 They have written and produced 38 top ten singles, and have sold over 50 million records worldwide.
 They have worked with artists such as: Demi Lovato, Diplo, Zedd, Gwen Stefani , Quavo, Yung Thug, Tiesto, Miley Cyrus, Selena Gomez, No Doubt, Wyclef Jean, Green Day, Mariah Carey, Justin Bieber, Flo Rida, Ellie Goulding, Tokio Hotel, Bebe Rexha and Armin van Buuren.
For You is the first compilation album by American singer Selena Gomez.
 The album was released on November 24, 2014 through Hollywood Records.
 It contains material from Gomez's band Selena Gomez & the Scene, as well as her releases as a solo artist.
 "For You" has been described as a "collection" by Gomez, as opposed to a greatest hits album.
 The album serves as her final project to be released through Hollywood Records, with whom she released four studio albums and a remix album.
 It includes two previously unreleased songs, produced by Rock Mafia, as well as new versions of some previously released recordings.
 A digital extended play containing the new material was made available for streaming.
"Stars Dance" is a song by American singer Selena Gomez from her debut solo studio album, of the same name (2013), included as the third track on the record.
 Gomez teased a preview of the song in her official YouTube account on July 15, 2013 but the full song was leaked with the rest of the album a few days before.
 The song was written by Adam Schmalholz, along with duo Antonina Armato and Tim James, who handled produced the track under their stage name Rock Mafia.
 Dubkiller and Steve Hammons handled the additional production.
 Selena considered the song "sophisticated" and "beautiful".
"Revival" is a song by American singer Selena Gomez from her second solo studio album, of the same name, released in October 9, 2015 as the first track on the record.
 Selena first teased a video of the song recording and production on her Instagram account then she teased the song again in a special Revival event on Palace Theater on September 16.
 The song was written by Gomez, Antonina Armato, Tim James, Chauncey Hollis, Justin Tranter, Julia Michaels and Adam Schmalholz and was produced by Rock Mafia and Hit-Boy with Dubkiller handling the additional production.
 Gomez said that the song is the most personal one on the album and she called as an "important song".
 The song was first recorded in Rock Mafia Studios in Los Angeles and was finished when Gomez was in Mexico with her crew on Casa Aramara in April 2015.
Can't Be Tamed is the third studio album by American singer Miley Cyrus.
 It was released on June 18, 2010, by Hollywood Records; it would become her final album with the label after signing with RCA Records in 2013.
 Cyrus wrote the project in 2009, while travelling internationally for her Wonder World Tour, and recorded it in 2010.
 Described by Cyrus as a "good [record] to blast in your car", "Can't Be Tamed" represents a musical departure from her earlier work, which she had grown to feel uninspired by.
 As executive producers, Tish Cyrus and Jason Morey enlisted partners including Devrim Karaoglu, Marek Pompetzki, Rock Mafia, and John Shanks to achieve Cyrus' desired new sound.
 Their efforts resulted in a primarily dance-pop record, which Cyrus' record label acknowledged differed from the original plans for the project.
 Its lyrical themes revolve largely around breaking free of constraints and expectations, which are largely mentioned in the context of romantic relationships.
"Me & My Girls" is a song by American singer Selena Gomez from the deluxe edition of her second solo studio album, Revival, released in October 9, 2015 as the twelfth track on the record.
 Gomez first performed "Me & My Girls" on Victoria's Secret Fashion Show, performing it in a medley with the third single from the album "Hands to Myself".
 The song was written by Gomez, Matt Morris, along with duo Antonina Armato and Tim James, who produced the track under their stage name Rock Mafia.
Demetria Devonne Lovato, known professionally as Demi Lovato ( or ; born August 20, 1992), is an American singer, songwriter, and actress.
 After making her debut as a child actress in "Barney & Friends", Lovato rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock" and released her debut single "This Is Me" which peaked at number nine on the "Billboard" Hot 100.
 The success of the film and its soundtrack resulted in a recording contract with Hollywood Records.
 Her debut album, "Don't Forget" (2008), debuted at number two on the US "Billboard" 200.
 The following year, Lovato was cast as the titular character of the television series "Sonny with a Chance" and she released her sophomore album, "Here We Go Again", which became her first one to top the "Billboard" 200 chart.
Stars Dance is the solo debut studio album by American singer Selena Gomez.
 It was released on July 19, 2013, by Hollywood Records.
 Gomez began planning the project in 2012, at which time she announced that her band Selena Gomez & the Scene would be taking an indefinite hiatus, and continued work into 2013.
 She has cited artists such as Britney Spears and Skrillex as influences on the record, which stylistically features EDM and electropop music.
 Elements of dubstep, techno, disco and worldbeat have been noted on the album.
 Gomez worked with producers such as Rock Mafia and The Cataracs on the album.
Timothy James Price is an American singer, songwriter and record producer.
 James is the co-founder of Rock Mafia.
 James co-wrote the songs "Potential Breakup Song" by Aly & AJ, "Come Back to Me" by Vanessa Hudgens, "See You Again" by Miley Cyrus, "Naturally" by Selena Gomez & the Scene.
 James collaborates with production partner Antonina Armato.
 He has also worked with The Cheetah Girls.
 He also sang "Twist My Hips" on the show "Shake It Up: Break It Down", which he sang with Nevermind.

Question: Rock Mafia has worked with an American singer, songwriter, and actress who made her debut as a child actress in what show?
Answer: Barney & Friends