Question: What musical starred-in by Ramin Karimloo originally featured the character Christine Daaé?

Context paragraphs:
The Phantom of the Opera (1986 musical): The Phantom of the Opera is a musical with music by Andrew Lloyd Webber and lyrics by Charles Hart and Richard Stilgoe.  Lloyd Webber and Stilgoe also wrote the musical's book together.  Based on the French novel "Le Fantôme de l'Opéra" by Gaston Leroux, its central plot revolves around a beautiful soprano, Christine Daaé, who becomes the obsession of a mysterious, disfigured musical genius living in the subterranean labyrinth beneath the Opera Garnier.

'Til I Hear You Sing: "'Til I Hear You Sing" is a song from the musical "Love Never Dies", the 2010 sequel to "The Phantom of the Opera".  It was originally performed by Ramin Karimloo as the Phantom during the London run and was recorded with him for the original London cast album.

Kim So-hyun (actress, born 1975): Kim So-hyun (born November 11, 1975) is a South Korean musical theatre actress.  She graduated from Seoul National University's College of Music and appeared in several operas, before making her official acting debut in 2001 as Christine Daaé in "The Phantom of the Opera".  She immediately rose to musical theatre stardom and has since starred in South Korean stage productions of "Jekyll & Hyde", "My Fair Lady", "The Three Musketeers", "Elisabeth", and "Marie Antoinette".

Ramin (album): Ramin, renamed Human Heart in the United States, is the debut studio album from Iranian-born Canadian actor and singer Ramin Karimloo.  It was released in the UK on April 9, 2012.

All I Ask of You: "All I Ask of You" is a song performed by Cliff Richard and Sarah Brightman during the 1986 English musical "The Phantom of the Opera".  It was written by Andrew Lloyd Webber, Charles Hart and Richard Stilgoe, and produced by Lloyd Webber.  The duet was meant for characters Christine Daaé and Raoul during the stage musical.  An operatic pop piece, its lyrics serve as dialogue between the two characters and discuss themes such as commitment and romance.  During the stage performance of "All I Ask of You", Steve Barton performs as the role of Raoul instead of Richard.  Like Lloyd Webber's song "The Music of the Night", "All I Ask of You" was compared to the music found in Giacomo Puccini's 1910 opera "La fanciulla del West".

Caroline Sheen: Caroline Sheen (born 1976) is a Welsh actress who has played various roles on stage in the West End and at other venues across London and the UK.  She played the role of Mary Poppins on the First National Tour of America.  She appeared as Fantine in "Les Misérables" alongside Ramin Karimloo and Hadley Fraser, and appears in the film version as well.

Carl Lindquist (actor): Carl Lindquist (born 17 June 1988) is an actor and singer-songwriter.  He recently appeared as Peter in the European tour of Bill Kenwright’s production of Jesus Christ Superstar as well as playing leading man “Fred Gaily” in Miracle on 34th Street (Known as Here’s Love).  He has also appeared on stage with Ramin Karimloo.

Daniel and Laura Curtis: Daniel Curtis and Laura Curtis (née Coyne) are Welsh composers and musicians.  As composers, they are best known for their album "Love on 42nd Street", which was released in aid of the BBC Children in Need appeal.  The album features the acclaimed single "Why Am I Falling" recorded by Ramin Karimloo.  The album also includes songs by West End and Broadway stars including; Lea Salonga, Samantha Barks, Sierra Boggess, John Owen-Jones and Simon Bowman.  The album reached number one in the Amazon and iTunes Broadway and Vocal charts in the UK and US.  A series of follow up singles were released with Broadway stars Laura Osnes, Cheyenne Jackson, Lisa O'Hare, Adam Pascal, Chris McCarrell and Katie Rose Clarke.  All the singles topped the iTunes Vocal charts in the UK and US.

Sierra Boggess: Sierra Marjory Boggess (born May 20, 1982) is an American theater actress and singer.  She is best known for originating the role of Ariel in "The Little Mermaid" on Broadway and for her multiple appearances as Christine Daaé in "The Phantom of the Opera."  Sierra has been involved in several productions of "The Phantom of the Opera" beginning with the Las Vegas production in 2006.  In 2010 she was cast to reimagine the role of Christine Daaé in Phantom's sequel "Love Never Dies".

Ramin Karimloo: Ramin Karimloo (Persian: رامین کریملو‎ ‎ ; born September 19, 1978) is an Iranian-Canadian actor and singer, recognized chiefly for his work in London's West End.  He has played leading male roles in both of the West End's longest running musicals: The Phantom and Raoul in "The Phantom of the Opera", and Jean Valjean, Enjolras, and Marius in "Les Misérables".  He also originated the role of the Phantom in Andrew Lloyd Webber's "Love Never Dies", which continues the story of "The Phantom of the Opera".  He made his Broadway debut as Valjean in the 2014 revival production of "Les Misérables", for which he received a Tony Award nomination.

Supporting paragraphs: Ramin Karimloo The Phantom of the Opera (1986 musical)
Answer: The Phantom of the Opera