André George Previn, KBE ( ; born Andreas Ludwig Priwin; April 6, 1929) is a German-American pianist, conductor, and composer.
 Previn is the winner of four Academy Awards for his film work and ten Grammy Awards for his recordings (and one more for his Lifetime Achievement).
Long Day's Journey into Night is a film by Canadian director David Wellington, released in 1996.
 An adaptation of Eugene O'Neill's play "Long Day's Journey into Night", the film starred William Hutt as James, Martha Henry as Mary, Peter Donaldson as Jamie, Tom McCamus as Edmund and Martha Burns as Cathleen.
John Howard Gallagher Jr. (born June 17, 1984) is an American actor and musician known for originating the role of Moritz Stiefel in Duncan Sheik and Steven Sater's rock musical "Spring Awakening", which earned him a Tony Award for Best Featured Actor in a Musical.
 He also played Johnny in Green Day's Broadway musical, "American Idiot", Lee in the 2011 Broadway production of "Jerusalem," and Edmund in the 2016 Broadway revival of "Long Day's Journey Into Night".
 He portrayed Jim Harper in Aaron Sorkin's drama series "The Newsroom", starred in the HBO mini-series "Olive Kitteridge", and played Emmett DeWitt in "10 Cloverfield Lane".
Long Day's Journey into Night may refer to: "Long Day's Journey into Night", a play by Eugene O'Neill.
 It may also refer to
Arthur Asher Miller (October 17, 1915 – February 10, 2005) was an American playwright, essayist, and figure in twentieth-century American theater.
 Among his most popular plays are "All My Sons" (1947), "Death of a Salesman" (1949), "The Crucible" (1953) and "A View from the Bridge" (1955, revised 1956).
 He also wrote several screenplays and was most noted for his work on "The Misfits" (1961).
 The drama "Death of a Salesman" has been numbered on the short list of finest American plays in the 20th century alongside "Long Day's Journey into Night" and "A Streetcar Named Desire".
Robert Lawrence Leonard (born February 28, 1969), better known by his stage name Robert Sean Leonard, is an American actor.
 He is known for playing Dr. James Wilson in the television series "House" (2004–2012) and Neil Perry in the film "Dead Poets Society".
 Leonard won a Tony Award for Best Featured Actor in a Play for his performance in "The Invention of Love" in 2001.
 His other Broadway credits include "Candida", "Long Day's Journey Into Night", "Breaking the Code", "The Speed of Darkness", "Philadelphia, Here I Come!
", "Arcadia", "The Music Man", "Born Yesterday", and "To Kill a Mockingbird".
Long Day's Journey into Night is a 1962 adaptation of the Eugene O'Neill play.
 It was directed by Sidney Lumet and produced by Ely Landau with Joseph E. Levine and Jack J. Dreyfus, Jr. as executive producers.
 The screenplay was not adapted but used directly from O'Neill's play, the music score by André Previn, and the cinematography by Boris Kaufman.
David Wellington (born 1963) is a Canadian film and television director, best known for the films "I Love a Man in Uniform" and the 1996 adaptation of "Long Day's Journey into Night".
Florence Eldridge (born Florence McKechnie, September 5, 1901, Brooklyn, New York – August 1, 1988, Long Beach, California) was an American actress.
 She was nominated for the Tony Award for Best Lead Actress in Play in 1957 for her performance in "Long Day's Journey into Night".
Albert Cornelius "Al" Freeman Jr. (March 21, 1934 – August 9, 2012) was an American actor, director, and educator.
 A life member of The Actors Studio, Freeman appeared in a wide variety of plays, ranging from Leroi Jones' "Slave/Toilet" to Joe Papp's revivals of "Long Day's Journey Into Night" and "Troilus and Cressida", and films, including "My Sweet Charlie", "Finian's Rainbow", and "Malcolm X", as well as television series and soap operas, such as "One Life to Live", "The Cosby Show", "Law & Order", "" and "The Edge of Night".

Question: What year was the man who wrote the music score for A Long Day's Journey into Night born?
Answer: 1929