Question: What musician who released the single "Swag It Out" stars in The Greatest Showman?

Context paragraphs:
Kiss It (Dev song): "Kiss It" is a song performed by American recording artist Dev with the collaboration of rapper Sage the Gemini, produced by Hit-Boy.  It was written by Dev as single in anticipation of her EP "Bittersweet July".  The song was released on December 12, 2013, after posting a preview of the single on Facebook.  "Kiss It" is a hip hop, swag song with synth influences that speaks about uncaring attitude.

Teach Me How to Dougie: "Teach Me How to Dougie" is a song recorded by American hip hop group Cali Swag District, produced by Runway Star for Cali Swag District's debut studio album, "The Kickback" (2011).  The song was written by Chanti Glee, Charon Childs, and Corey Fowler, and was released digitally on April 12, 2010 as the first single from the album through Capitol Records.  The title refers to the Dougie dance, which originated in Dallas, Texas.

Zendaya discography: The discography of Zendaya, an American singer and songwriter, consists of one studio album, four singles, eight promotional singles, fifteen music videos and some album appearances.  Her first appearance was as part of Kidz Bop Kids on album "Kidz Bop Dance Party", in 2010.  In 2011 Zendaya released her debut independent single, "Swag It Out".  Her next single, "Watch Me", peaked at number 86 on Billboard.

Raj Kapoor: Ranbir Raj Kapoor (14 December 1924 – 2 June 1988), also known as "the greatest showman of Indian cinema", was a noted Indian film actor, producer and director of Hindi cinema.  Born at Kapoor Haveli in Peshawar to actor Prithviraj Kapoorhe was a prominent member of the Kapoor familythat produced several celebrated Bollywood superstars.

Earthquake (DJ Fresh and Diplo song): "Earthquake" is a single by British disc jockey DJ Fresh and American counterpart Diplo featuring vocals from Dominique Young Unique.  The song was released in the United Kingdom on 18 August 2013 as the lead single from his fourth studio album.  An edited version of the song with extra production and sound effects features in the film Kick-Ass 2, under the name "Motherquake".  It contains a sample from the song "Teach Me How to Dougie" by the hip hop group Cali Swag District.  "Earthquake" peaked at number four on the UK Singles Chart, number three on the UK Dance Chart and topped the UK Indie Chart.

Yahya Abdul-Mateen II: Yahya Abdul-Mateen II is an American actor, best known for his role Cadillac in the television series "The Get Down".  He also starred in "Baywatch" (2017), and will appear in "The Greatest Showman" and DC's "Aquaman".

Michael Gracey: Michael Gracey is an Australian film and commercial director and visual effects artist.  He is the director of the upcoming musical biopic "The Greatest Showman" starring Hugh Jackman.

The Greatest Showman: The Greatest Showman is an upcoming American biographical musical drama film directed by Michael Gracey, and written by Jenny Bicks and Bill Condon.  It stars Hugh Jackman, Zac Efron, Michelle Williams, Rebecca Ferguson and Zendaya, and tells the story of how P. T. Barnum started the Barnum & Bailey Circus.  The film is scheduled to be released by 20th Century Fox on December 25, 2017 in United States.

Zendaya: Zendaya's music career began in 2011 when she released the single "Swag It Out", followed by the single "Watch Me" (with Bella Thorne); the former was released by an independent record label.  She signed a major record deal with Hollywood Records on August 8, 2012, and started recording songs for her debut album on August 12, 2012.  The album, titled "Zendaya", was released on September 17, 2013, preceded by the single "Replay".

Swag It Out: "Swag It Out" is the official debut single by American singer Zendaya, known for starring in the series "Shake It Up".  The song was composed by Bobby Brackins and was released on May 30, 2011 as the first single of Zendaya's career on an independent label, not being included on any album or soundtrack of Walt Disney Records, just their record label.

Supporting paragraphs: The Greatest Showman Zendaya
Answer: Zendaya