Question: Who starred in The Musical?
Context: Katarzyna (Kasia) Łaska (born 26 May 1979 in Tomaszów Mazowiecki, Poland) is a Polish singer best known from the Musical Theatre Roma where she starred in the lead role of Kim in the musical "Miss Saigon", adult Wendy in the musical "Peter Pan" and Frenchy in the musical "Grease".  She also played Maria in the musical "West Side Story" at the Musical Theatre Capitol in Wrocław. Scrooge is a 1970 British musical film adaptation in Panavision of Charles Dickens' 1843 story "A Christmas Carol".  It was filmed in London between January and May 1970 and directed by Ronald Neame, and starred Albert Finney in the title role.  The film's musical score was composed by Leslie Bricusse, and arranged and conducted by Ian Fraser.  With eleven musical arrangements interspersed throughout (all retaining a traditional British air), the award-winning motion picture is a faithful musical retelling of the original.  The film received limited praise, but Albert Finney won the Golden Globe Award for Best Actor in a Musical/Comedy in 1971. Acorn Antiques: The Musical!  is a musical about an antiques dealer, based on the parodic soap opera of the same name by Victoria Wood.  It premiered in the West End in 2005, and starred Julie Walters and Celia Imrie.  The musical won the Olivier Award for Best Performance in a Supporting Role in a Musical and was nominated as Best New Musical. Sandra Bullock is an American actress who made her film debut with a minor role in the 1987 thriller "Hangmen".  She made her television debut in the television film "Bionic Showdown: The Six Million Dollar Man and the Bionic Woman" (1989) and played the lead role in the short-lived sitcom "Working Girl" (1990) before making her breakthrough starring in the action film "Speed" (1994).  She starred with Sylvester Stallone in "Demolition Man" (1994).  Bullock founded her own production company, Fortis Films, and starred in the romantic comedy "While You Were Sleeping" in 1995.  Her performance in the film earned her first nomination for the Golden Globe Award for Best Actress – Motion Picture Comedy or Musical.  The following year, Bullock starred with Matthew McConaughey in the film adaptation of John Grisham's novel "A Time to Kill" (1996).  In 1997, she reprised her "Speed" role in the sequel, "".  The following year, Bullock starred in the romantic comedy "Practical Magic", voiced Miriam in the animated biblical film "The Prince of Egypt" and also executive produced her first film, the romantic drama "Hope Floats". Expresso Bongo, a 1958 West End musical and a 1959 film, is a satire of the music industry.  It was first produced on the stage at the Saville Theatre, London, on 23 April 1958.  Its book was written by Wolf Mankowitz and Julian More, with music by David Heneker and Monty Norman, also the co-lyricist with Julian More.  The production starred Paul Scofield with Hy Hazell, Millicent Martin and James Kenney.  Musical director was Burt Rhodes and director William Chappell.  The subsequent 1959 film version was directed by Val Guest and starred Laurence Harvey, Cliff Richard, and Yolande Donlan. Ku Hye-sun (born November 9, 1984) is a South Korean actress, singer-songwriter, director and artist.  She gained mainstream recognition in the television dramas "Pure in Heart" (2006), "The King And I" (2007), "Boys Over Flowers" (2009), "Take Care of Us, Captain" (2012), "Angel Eyes" (2014) and "Blood" (2015). Yes, Uncle!  is a musical comedy by Austen Hurgen and George Arthurs, with music by Nat D. Ayer and lyrics by Clifford Grey (who also wrote "The Bing Boys are Here" and the following series of highly successful reviews).  The story is based on the farce "Le truc du Brésilien" by Nicolas Nancey and Paul Armont, and the musical takes its title from the catch-phrase used by Bobby Summers and Mabel Mannering, addressing Uncle Brabazon Hollybone.  It was produced by George Grossmith, Jr. and Edward Laurillard and opened at the Prince of Wales Theatre in London on 16 December 1917 and ran for a very successful 626 performances.  The piece starred Fred Leslie as G.B. Stark, Margaret Bannerman as Joan and Leslie Henson as Bobby Summers.  Later, Madge Elliott and Cyril Ritchard starred in the musical. 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. The A Very Potter Musical album contains the songs from the Harry Potter parody musical "A Very Potter Musical", produced by StarKid Productions with music and lyrics by Darren Criss (who also starred in the musical as Harry Potter) and A.J. Holmes (who played piano in the band), and book by Matt Lang, Nick Lang, and Brian Holden.  It was recorded by the musical's cast and was released digitally through the group's official site in 2009 and later on their Bandcamp site on July 29, 2010. Love Birds is an original musical with book, music and lyrics by Robert J. Sherman.  The musical officially premiered at the 2015 Edinburgh Fringe Festival at The Pleasance on August 7, 2015.  The production was directed and choreographed by Stewart Nicholls.  Prior to the Edinburgh run, there were two previews held in London at the Lost Theatre (in Stockwell) on July 28 and 29.  The Original Edinburgh Cast Recording was recorded on July 30 and mixed and mastered on July 31 and August 3 and was first released by SimG Records on August 12 at the Edinburgh Festival.  Two Edinburgh previews took place on August 5 and 6 with Press Night taking place on August 8.  The final festival performance took place on August 31.  The show starred Ruth Betteridge, Greg Castiglioni, John Guerrasio, George Knapper, Jonny Purchase, Joanna Sawyer, Anna Stolli, Rafe Watts and Ryan Willis.  In its end of the year round-up of regional British fringe musical theatre, "Musical Theatre Review" hailed "Love Birds": "a triumph of whimsy, a children’s story written with adult sensibilities and featuring a cracking score that celebrated the lost era of vaudeville.  Blessed with an equally strong design from Gabriella Slade and some marvellously sensitive performances, Love Birds was probably the most accomplished piece of musical theatre to arise from the many delights at this year’s festival."
Answer: South Korean actress