Question: Who hosted the reality talent competition for a musical based on a 1939 film?

Context articles: Simon Cowell
Marky Cielo
Pasikatan: CLTV 36 Talent Search
Battle of the Choirs
The Wizard of Oz (2011 musical)
Over the Rainbow (Canadian TV series)
StarStruck (Philippine TV series)
C.J. Allen (entrepreneur)
Jennylyn Mercado
Pilipinas Got Talent

Simon Phillip Cowell ( ) (born 7 October 1959) is an English reality television judge and producer, entrepreneur, and philanthropist.
 He is most recognised as a judge on the British TV talent competition series "Pop Idol", "The X Factor", and "Britain's Got Talent", and the American TV talent competition shows "American Idol", "The X Factor," and "America's Got Talent".
 Cowell is the principal founder and chief executive of the British entertainment company Syco.
Mark Angelo Cadaweng Cielo (May 12, 1988 – December 7, 2008), better known as Marky Cielo, was a Filipino actor, dancer, and the first known Igorot in Philippine showbiz.
 He is notable for his win in the reality talent competition "StarStruck" (March 12, 2006).
 During his two-year career, he was able to star in several television shows and in one film, notably "Fantastikids" (2006), "Asian Treasures" (2007), "Boys Nxt Door" (2007), "" (2007–2008), "Sine Novela: Kaputol ng Isang Awit" (2008), and his final performance, "LaLola" (2008).
 He also voiced the character Ichigo Kurosaki in the anime "Bleach" (2007).
Pasikatan: CLTV 36 Talent Search (Dahil Dito KaRehiyon, Ikaw ang Sikat!)
 is the biggest region-wide reality talent competition aired over Central Luzon Television (CLTV 36), focused and emphasized to discover the people of Central Luzon (Region III) that have unique talents to show and shine for, Pasikatan was formerly known as StarMill in the first two seasons of the program.
Battle of the Choirs is an Australian reality talent competition that premiered on the Seven Network on 15 June 2008.
 The show is hosted by David Koch, with the judging panel consisting of Jonathon Welch, Iva Davies, Charli Delaney, and George Torbay.
The Wizard of Oz is a musical based on the 1939 film "The Wizard of Oz", with a book adapted by Andrew Lloyd Webber and Jeremy Sams.
 The musical uses the Harold Arlen and E. Y. Harburg songs from the film and includes some new songs and additional music by Andrew Lloyd Webber and additional lyrics by Tim Rice.
Over the Rainbow is a Canadian reality talent competition, which premiered on CBC Television on September 16, 2012.
 Based on the 2010 series "Over the Rainbow" in the United Kingdom, the series auditioned aspiring musical theatre performers for the role of Dorothy for a Toronto production of Andrew Lloyd Webber's stage musical adaptation of "The Wizard of Oz".
 The series was hosted by Daryn Jones.
 Arlene Phillips, Thom Allison, and Louise Pitre served as judges alongside Webber.
StarStruck is a Philippine reality talent competition created by GMA Network.
 It debuted on October 27, 2003, and has since become one of the most popular shows reality competition programs on Philippine television.
Christopher James Michael Allen (born January 13, 1985) known professionally as C.J. Allen is a Canadian-born entrepreneur, creative director, magazine editor, talent scout and talent competition judge.
 He is recognized as the creator, executive producer and judge for South Korea's first all-English talent competition, Top Talent Korea and Canadian vocal talent search The Shot.
Jennylyn Anne Pineda Mercado (born May 15, 1987) is a Filipino actress, singer, and songwriter.
 She was the winner of the first season of the reality talent competition "StarStruck".
 Mercado garnered acclaim at a young age for her acting performances on television and film.
 She is known for starring in multiple box office successes, namely "English Only, Please" (2014), "The Prenup" (2015), "Walang Forever" (2015), and "Just the 3 of Us" (2016).
 She has released three albums from GMA Records and Viva Records which have several popular singles such as "Sa Aking Panaginip", "Moments Of Love" collaboration with Janno Gibbs, "Maybe This Time" and "Kahit Sandali".
 In 2017, she is set to topbill the Philippine remake of "My Love from the Star".
Pilipinas Got Talent (PGT), is a Filipino reality talent competition show on ABS-CBN network that began on February 20, 2010.
 It is based on the "Got Talent" franchise, a British TV format conceived and owned by Simon Cowell's SYCO company.
 "Pilipinas" is the Filipino word for Philippines.
 Anyone can join and showcase their talents in the audition.
 At the sound of three buzzers from the judges, the auditionees are asked to stop their act.
 With at least two yes from the judges, they are automatically in the list for Judges Cull, where judges have to pick only 36 acts that will move to the semi-finals.
 Acts will compete against each other in order to gain the audience support to win the prize money and the title of Pilipinas Got Talent winner.