Question: Ock Joo-hyun has participated in which musical written by Frank Wildhorn based on the book of the same name?
Context: The Musical () is a 2011 South Korean television series starring Ku Hye-sun, Choi Daniel, Park Ki-woong, Ock Joo-hyun and Kim Eun-se.  It aired on SBS from September 2 to December 23, 2011 on Fridays at 22:00 for 15 episodes. Rudolf is a musical conceived for the stage by Frank Wildhorn and Steve Cuden, with a book by Jack Murphy and Phoebe Hwang, lyrics by Murphy, additional lyrics by Nan Knighton, and music by Frank Wildhorn.  Arrangements by Koen Schoots and orchestrations by Kim Scharnberg.  It is about Rudolf, Crown Prince of Austria and his extramarital relationship with Baroness Mary Vetsera.  Their 1889 deaths at his Mayerling hunting lodge apparently were the result of a murder-suicide pact, although historians have debated this explanation. Jekyll & Hyde is a musical horror-drama loosely based on the novella "The Strange Case of Dr Jekyll and Mr Hyde" by Robert Louis Stevenson.  Originally conceived for the stage by Frank Wildhorn and Steve Cuden, it features music by Wildhorn, a book by Leslie Bricusse and lyrics by Wildhorn, Bricusse and Cuden.  Following a world premiere run in Houston, Texas, the musical embarked on a national tour of the United States prior to its Broadway debut in 1997.  Many international productions have since been staged including two subsequent North American tours, two tours of the United Kingdom, a concert version and a re-vamped US tour in 2012 ahead of a 2013 revival on Broadway. Never Say Goodbye is a musical with a book and lyrics by Shûichirô Koike and music by Frank Wildhorn.  It was written specifically for Takarazuka Revue, the all-female Japanese theatre company.  Wildhorn was the first non-Japanese to write an original musical for the company. Ock Joo-hyun (; sometimes spelled Ock Ju-hyun; born March 20, 1980) is a South Korean singer and musical theatre actress, known mostly for her role as the lead singer of the South Korean girl group Fin.K.L.  After their unofficial breakup in 2002, Ock released three solo albums and has participated in musicals, namely "Aida", "Chicago", "Cats", "42nd Street", and "The Count of Monte Cristo". The Civil War is a musical written by Gregory Boyd and Frank Wildhorn, with lyrics by Jack Murphy and music by Wildhorn.  The musical centers on the American Civil War, with the musical numbers portraying the war through Union, Confederate, and slave viewpoints.  The musical was nominated for a Tony Award for Best Musical.  Its styles include Gospel, Folk, Country, Rock, and Rhythm and Blues. "Where Do Broken Hearts Go" is the fourth single from Whitney Houston's second album, "Whitney".  The ballad was released on February 25, 1988.  The song was written by Frank Wildhorn and Chuck Jackson and produced by Narada Michael Walden.  Wildhorn approached Jackson about the opportunity to write for Whitney Houston.  Jackson came up with the title, and Wildhorn completed the music and lyrics for the song. The Count of Monte Cristo is a musical based on the famed novel of the same name, with influences from the 2002 film adaptation of the book.  The music is written by Frank Wildhorn and the lyrics and book are by Jack Murphy. "In His Eyes" is a song performed in the musical "Jekyll and Hyde", composed by Frank Wildhorn with lyrics by Frank Wildhorn, Leslie Bricusse and Steve Cuden.  "Jekyll and Hyde" premiered on Broadway in 1997 and has since seen many subsequent international, as well as regional, productions.  In 2013, the show was revived on Broadway.  The song appeared in the Original Broadway production performed by Linda Eder and Christiane Noll. This is the Moment is a song by Frank Wildhorn and Leslie Bricusse, and is a major song of Frank Wildhorn and Steve Cuden's musical "Jekyll & Hyde".  Actors from the Broadway production like Robert Cuccioli, and David Hasselhoff sing it in the key of E.
Answer: The Count of Monte Cristo