Question: "The Boy Next Door" is a popular song in a musical film about what family?

full_context: Document 1: St. Louis Blues (1939 film): St. Louis Blues is a 1939 American musical film directed by Raoul Walsh that was set on a Mississippi River showboat. Although the plot was not related to the song, the "St. Louis Blues" was sung as one of the numbers. Artists included jazz singer Maxine Sullivan and composer/singer/actor Hoagy Carmichael. The film features Dorothy Lamour, Lloyd Nolan, Tito Guízar, Jerome Cowan and Mary Parker.
Document 2: Meet Me After the Show: Meet Me After the Show is a 1951 Technicolor musical film starring Betty Grable and released through 20th Century Fox. The film was one of Grable's last musical films for Fox during her box office reign of the past decade.
Document 3: Boy next door: The boy next door is an archetype of storytelling. He is often invoked in Western contexts to indicate wholesome, unassuming, or "average" masculinity. A boy next door may serve as a love interest for a female protagonist who lives near by.
Document 4: Meet the People: Meet the People (1944) is a Metro-Goldwyn-Mayer musical comedy film made during World War II, and starring Lucille Ball and Dick Powell and featuring Virginia O'Brien, Bert Lahr, Rags Ragland and June Allyson. The film takes its title from a successful Los Angeles stage revue, which ran on Broadway from December 25, 1940 to May 10, 1941. Vaughn Monroe and his orchestra, Spike Jones and his City Slickers, and Virginia O'Brien were also in the original stage cast. O'Brien sings the hit song "Say We're Sweethearts Again".
Document 5: The Next Voice You Hear...: The Next Voice You Hear... is a 1950 drama film in which a voice claiming to be that of God preempts all radio programs for days all over the world. It stars James Whitmore and Nancy Davis (who later became Nancy Reagan) as Joe and Mary Smith, a typical American couple. It was based on a short story of the same name by George Sumner Albee. The voice is never heard by the (film) audience.
Document 6: Babes on Broadway: Babes on Broadway is a 1941 American musical film starring Mickey Rooney and Judy Garland and directed by Busby Berkeley, with Vincente Minnelli directing Garland's big solo numbers. The film, which features Fay Bainter and Virginia Weidler, was the third in the "Backyard Musical" series about kids who put on their own show, following "Babes in Arms" (1939) and "Strike Up the Band" (1940). Songs in the film include "Babes on Broadway" by Burton Lane (music) and E.Y. "Yip" Harburg (lyrics), and "How About You?" by Lane with lyrics by Ralph Freed, the brother of producer Arthur Freed. The movie ends with a minstrel show performed by the main cast in blackface.
Document 7: Ziegfeld Follies (film): Ziegfeld Follies is a 1946 American musical comedy film released by Metro-Goldwyn-Mayer and directed by Lemuel Ayers, Roy Del Ruth, Robert Lewis, Vincente Minnelli, Merrill Pye, George Sidney and Charles Walters. It stars many of MGM leading talents, including Fred Astaire, Lucille Ball, Lucille Bremer, Fanny Brice (the only member of the ensemble who was a star of the original Follies), Judy Garland, Kathryn Grayson, Lena Horne, Gene Kelly, James Melton, Victor Moore, William Powell, Red Skelton, and Esther Williams.
Document 8: Meet Me in St. Louis: Meet Me in St. Louis is a musical film made by Metro-Goldwyn-Mayer and released in 1944. Divided into a series of seasonal vignettes, starting with Summer 1903, it relates the story of a year in the life of the Smith family in St. Louis, leading up to the opening of the Louisiana Purchase Exposition (more commonly referred to as the World's Fair) in the spring of 1904. The picture stars Judy Garland, Margaret O'Brien, Mary Astor, Lucille Bremer, Tom Drake, Leon Ames, Marjorie Main, June Lockhart, and Joan Carroll.
Document 9: The Girl Next Door (2004 film): The Girl Next Door is a 2004 American romantic comedy film about a high school senior who falls in love for the first time with the girl next door, but finds the situation becoming complicated after he learns that she is a former pornographic actress. It stars Emile Hirsch, Elisha Cuthbert, Timothy Olyphant, James Remar, Chris Marquette and Paul Dano and is directed by Luke Greenfield.
Document 10: The Boy Next Door (song): "The Boy Next Door" is a 1944 popular song by Hugh Martin and Ralph Blane. It was introduced in the musical film "Meet Me in St. Louis," where it was performed by Judy Garland. In 1954 Vic Damone sang it in the first minutes of the film Athena. It has subsequently become a popular standard, performed by many artists.
Document 11: Vincente Minnelli: Vincente Minnelli (February 28, 1903 – July 25, 1986) was an American stage director and film director, famous for directing such classic movie musicals as "Meet Me in St. Louis", "Gigi", "The Band Wagon", and "An American in Paris". In addition to having directed some of the most famous and well-remembered musicals of his time, Minnelli made many comedies and melodramas. He was married to Judy Garland from 1945 until 1951; they were the parents of Liza Minnelli.
Document 12: The Girl Next Door (1953 film): The Girl Next Door is a 1953 musical comedy film directed by Richard Sale, released by 20th Century Fox, and starring June Haver, Dan Dailey, and Dennis Day.
Document 13: Hugh Martin: Hugh Martin (August 11, 1914 – March 11, 2011) was an American musical theater and film composer, arranger, vocal coach, and playwright. He was best known for his score for the 1944 MGM musical "Meet Me In St. Louis", in which Judy Garland sang three Martin songs, "The Boy Next Door," "The Trolley Song," and "Have Yourself a Merry Little Christmas." The last of these has become a Christmas season standard in the United States and around the English-speaking world. Martin became a close friend of Garland and was her accompanist at many of her concert performances in the 1950s, including her appearances at the Palace Theater.
Document 14: State Fair (1933 film): State Fair (1933) is an American Pre-Code comedy-drama film directed by Henry King and starring Janet Gaynor, Will Rogers, and Lew Ayres. The picture tells the story of a farm family's multi-day visit to the Iowa State Fair, where the parents seek to win prizes in agricultural and cooking competitions, and their teenage daughter and son each find unexpected romance. Based on a bestselling novel by Phil Stong, this was the first of three film versions of the novel released to theaters, the others being the movie musicals "State Fair" (1945) starring Jeanne Crain and Dana Andrews, and "State Fair" (1962) starring Ann-Margret and Pat Boone.
Document 15: Boy Next Door (song): "Boy Next Door" is the fifth single from British R&B artist Jamelia and the fourth and final single from her debut album "Drama". "Boy Next Door" is Jamelia's smallest hit, missing the UK Top 40, peaking at #42 and spending only two weeks inside the Top 75. The version released as a single was a slight remix to the version that appears on the album and is also slightly shorter in length.
ground_truth: Smith