Background: The Sound of Music is a musical with music by Richard Rodgers, lyrics by Oscar Hammerstein II and a book by Howard Lindsay and Russel Crouse. It is based on the memoir of Maria von Trapp, The Story of the Trapp Family Singers. Set in Austria on the eve of the Anschluss in 1938, the musical tells the story of Maria, who takes a job as governess to a large family while she decides whether to become a nun. She falls in love with the children, and eventually their widowed father, Captain von Trapp.
Context: Columbia Masterworks recorded the original Broadway cast album a week after the show's 1959 opening. The album was the label's first deluxe package in a gatefold jacket, priced $1 higher than previous cast albums. It was #1 on Billboard's best-selling albums chart for 16 weeks in 1960. It was released on CD from Sony in the Columbia Broadway Masterworks series. In 1959, singer Patti Page recorded the title song from the show for Mercury Records on the day that the musical opened on Broadway. Since it was recorded a week before the original Broadway cast album, Page was the first artist to record any song from the musical. She featured the song on her TV show, The Patti Page Olds Show, helping to popularize the musical. The 1960 London production was recorded by EMI and was issued on CD on the Broadway Angel Label.  The 1965 film soundtrack was released by RCA Victor and is one of the most successful soundtrack albums in history, having sold over 20 million copies worldwide. Recent CD editions incorporate musical material from the film that would not fit on the original LP. The label has also issued the soundtrack in German, Italian, Spanish and French editions. RCA Victor also released an album of the 1998 Broadway revival produced by Hallmark Entertainment and featuring the full revival cast, including Rebecca Luker, Michael Siberry, Jan Maxwell and Fred Applegate. The Telarc label made a studio cast recording of The Sound of Music, with the Cincinnati Pops Orchestra conducted by Erich Kunzel (1987). The lead roles went to opera stars: Frederica von Stade as Maria, Hakan Hagegard as Captain von Trapp, and Eileen Farrell as the Mother Abbess. The recording "includes both the two new songs written for the film version and the three Broadway songs they replace, as well as a previously unrecorded verse of "An Ordinary Couple"". The 2006 London revival was recorded and has been released on the Decca Broadway label. There have been numerous studio cast albums and foreign cast albums issued, though many have only received regional distribution. According to the cast album database, there are 62 recordings of the score that have been issued over the years.  The soundtrack from the 2013 NBC television production starring Carrie Underwood and Stephen Moyer was released on CD and digital download in December 2013 on the Sony Masterworks label. Also featured on the album are Audra McDonald, Laura Benanti and Christian Borle.
Question: What songs did they sing?

Answer:
two new songs written for the film version and the three Broadway songs they replace, as well as a previously unrecorded verse of "An Ordinary Couple"".