Question: When was the composer of the song "Glad to Be Unhappy" born? 

full_context: Document 1: Richard M. Sherman: Richard Morton Sherman (born June 12, 1928) is an American songwriter who specialized in musical films with his brother Robert Bernard Sherman. According to the official Walt Disney Company website and independent fact checkers, "the Sherman Brothers were responsible for more motion picture musical song scores than any other songwriting team in film history." Some of the Sherman Brothers' best known songs were incorporated into live action and animation musical films including: "Mary Poppins", "The Jungle Book", "The Many Adventures of Winnie the Pooh", "Chitty Chitty Bang Bang", "Snoopy Come Home", "Bedknobs and Broomsticks", "The Slipper and the Rose", and "Charlotte's Web". Their most well known work, however, remains the theme park song "It's a Small World (After All)". According to Time.com, this song is the most performed song of all time.
Document 2: Make Believe (Jessica Molaskey album): Make Believe is the third album by torch song singer Jessica Molaskey, accompanied by an all-star musical group that includes Bucky Pizzarelli and John Pizzarelli. Guest singer Adam Guettel joins her for a duet on "Glad to Be Unhappy".
Document 3: Betty Comden: Betty Comden (May 3, 1917 November 23, 2006) was one-half of the musical-comedy duo Comden and Green, who provided lyrics, libretti, and screenplays to some of the most beloved and successful Hollywood musicals and Broadway shows of the mid-20th century. Her writing partnership with Adolph Green, called "the longest running creative partnership in theatre history", lasted for six decades, during which time they collaborated with other leading entertainment figures such as the famed "Freed Unit" at MGM, Jule Styne and Leonard Bernstein, and wrote the musical comedy film "Singin' in the Rain".
Document 4: Sherman Brothers: The Sherman Brothers were an American songwriting duo that specialized in musical films, made up of Robert B. Sherman (December 19, 1925 – March 6, 2012) and Richard M. Sherman (born June 12, 1928).
Document 5: Spread a Little Happiness: "Spread a Little Happiness" is a song by English musical comedy composer Vivian Ellis and writer Clifford Grey from their 1929 musical "Mr. Cinders". Ellis was suffering from a fever of 103 °F when he wrote the song. In the original production it was sung by Bobby Howes as Jim, but Binnie Hale was the singer on the 78 RPM record that was released.
Document 6: Richard Rodgers: Richard Charles Rodgers (June 28, 1902 – December 30, 1979) was an American composer of music for more than 900 songs and for 43 Broadway musicals. He also composed music for films and television. He is best known for his songwriting partnerships with the lyricists Lorenz Hart and Oscar Hammerstein II. His compositions have had a significant impact on popular music up to the present day, and have an enduring broad appeal.
Document 7: Happy, Happy Birthday Baby: "Happy, Happy Birthday Baby" is a 1957 song written by Margo Sylvia & Gilbert Lopez. "Happy, Happy Birthday Baby" was originally performed by The Tune Weavers, who had their only hit with this song. Both Margo Sylvia and Gilbert Lopez were members of The Tune Weavers. The single went to number four on the R&B chart and went to number five on the Hot 100. The B-side of "Happy, Happy Birthday Baby, was The Tune Weavers version of "Ol' Man River"
Document 8: You're Just in Love: "You're Just in Love" is a popular song by Irving Berlin. It was published in 1950 and was first performed by Ethel Merman and Russell Nype in "Call Me Madam", a musical comedy that debuted at the Imperial Theatre in New York City on October 12 that year. The show ran for 644 performances. Ethel Merman also later starred in the 1953 film version. Theatre lore has it that Berlin wrote the song one night after Call Me Madam was not doing well in tryouts. The second act of the show was lacking. "What I'd like to do is a song with the kid (Russell Nype)," Merman said. So, Berlin went to his room and later produced the counterpoint song. When Berlin played the song for Merman, she said, "We'll never get off the stage." Reportedly, Berlin played the song for Russell Nype first, but admonished him not to admit he did so because it would infuriate Merman.
Document 9: Burt Bacharach: Burt Freeman Bacharach ( ; born May 12, 1928) is an American composer, songwriter, record producer, pianist, and singer who has composed hundreds of popular hit songs from the late 1950s through the 1980s, many in collaboration with popular lyricist Hal David. A six-time Grammy Award winner and three-time Academy Award winner, Bacharach's songs have been recorded by more than 1,000 different artists. s of 2014 , he had written 73 US and 52 UK Top 40 hits. He is considered one of the most important composers of 20th-century popular music.
Document 10: Miss Otis Regrets: "Miss Otis Regrets" is a song composed by Cole Porter in 1934, and first performed by Douglas Byng in "Hi Diddle Diddle", a revue that opened on October 3, 1934, at London's Savoy Theatre.
Document 11: Robert B. Sherman: Robert Bernard Sherman (December 19, 1925 – March 6, 2012) was an American songwriter who specialized in musical films with his brother Richard Morton Sherman. According to the official Walt Disney Company website and independent fact checkers, "the Sherman Brothers were responsible for more motion picture musical song scores than any other songwriting team in film history." Some of the Sherman Brothers' best known songs were incorporated into live action and animation musical films including: "Mary Poppins", "The Jungle Book", "The Many Adventures of Winnie the Pooh", "Chitty Chitty Bang Bang", "The Slipper and the Rose", and "Charlotte's Web". Their most well known work, however, remains the theme park song "It's a Small World (After All)". According to Time.com, this song is the most performed song of all time.
Document 12: You'd Be So Easy to Love: "(You'd Be So) Easy to Love" is a popular song written by Cole Porter for William Gaxton to sing in the 1934 Broadway show "Anything Goes". However Gaxton was unhappy about its wide vocal range and it was cut from the musical. Porter re-wrote it for the 1936 film "Born to Dance", where it was introduced by Eleanor Powell, James Stewart, and Frances Langford under its alternate title, "Easy to Love". The song was only later added to the 1987 and 2011 revivals of "Anything Goes" under the complete title "You’d Be So Easy to Love".
Document 13: Oscar Hammerstein II: Oscar Greeley Clendenning Hammerstein II ( ; July 12, 1895 – August 23, 1960) was an American librettist, theatrical producer, and (usually uncredited) theatre director of musicals for almost forty years. Hammerstein won eight Tony Awards and two Academy Awards for Best Original Song. Many of his songs are standard repertoire for vocalist's and jazz musicians. He co-wrote 850 songs. Hammerstein was the lyricist and playwright in his partnerships; his collaborators wrote the music. Hammerstein collaborated with numerous composers, such as Jerome Kern, with whom he wrote "Show Boat", Vincent Youmans, Rudolf Friml, Richard A. Whiting and Sigmund Romberg; but he is best known for his collaborations with Richard Rodgers, as the duo Rodgers and Hammerstein which include "Oklahoma!", "Carousel", "South Pacific", "The King and I", and "The Sound of Music".
Document 14: Glad to Be Unhappy: "Glad to Be Unhappy" is a popular song composed by Richard Rodgers, with lyrics by Lorenz Hart. It was introduced in their 1936 musical "On Your Toes" by Doris Carson and David Morris, although it was not popular at the time, as there was only one 1936 recording of the tune. In the 1937 London production, it was sung by Gina Malo and Eddie Pola. The song was performed in the 1954 Broadway revival by Kay Coulter and Joshua Shelley.
Document 15: Stephen Sondheim: Stephen Joshua Sondheim ( ; born March 22, 1930) is an American composer and lyricist known for more than a half-century of contributions to musical theatre. Sondheim has received an Academy Award, eight Tony Awards (more than any other composer, including a Special Tony Award for Lifetime Achievement in the Theatre), eight Grammy Awards, a Pulitzer Prize, a Laurence Olivier Award, and a 2015 Presidential Medal of Freedom. He has been described by Frank Rich of "The New York Times" as "now the greatest and perhaps best-known artist in the American musical theater." His best-known works as composer and lyricist include "A Funny Thing Happened on the Way to the Forum", "Company", "Follies", "A Little Night Music", "Pacific Overtures", "", "Merrily We Roll Along", "Sunday in the Park with George", "Into the Woods", "Assassins", and "Passion". He also wrote the lyrics for "West Side Story" and "Gypsy".
ground_truth: June 28, 1902