Question: In 1964, The Statler Brothers began singing backup for a singer born in what year?

Context paragraphs:
Lew DeWitt: Lewis Calvin "Lew" DeWitt (March 12, 1938 - August 15, 1990) was an American country music singer and composer.  He was also a well known country music guitarist and tenor singer and was the original tenor and founding member of The Statler Brothers.

Today (The Statler Brothers album): Today is the twenty-fourth studio album by American country music group The Statler Brothers.  It was released in 1983 via Mercury Records.  The album peaked at number 193 on the "Billboard" 200 chart.  It is the first Statler album to feature Jimmy Fortune, who replaced Lew DeWitt as the group's new tenor singer due to the latter's failing health.

Richard Sterban: Richard Anthony Sterban (born April 24, 1943) is an American bass singer born in Camden, New Jersey, who joined the country and gospel quartet The Oak Ridge Boys in 1972.  Prior to joining The Oak Ridge Boys, Sterban toured with J. D. Sumner and the Stamps Quartet, who were singing backup for Elvis Presley at that time.  Sterban ultimately became best known for his "oom-pa-pa-oom-pa-pa-mow-mow" bass solo in the Oak Ridge Boys' 1981 single "Elvira" and sang lead vocals on a select few of the group's songs, including a cover of The Righteous Brothers' hit "Dream On," which itself became a hit.

The Statler Brothers: The Statler Brothers (sometimes referred to in country music circles as simply The Statlers) were an American country music, gospel, and vocal group.  The quartet was formed in 1955 performing locally and, in 1964, they began singing backup for Johnny Cash.

Flowers on the Wall (album): Flowers on the Wall is the debut studio album by the Statler Brothers.  It produced their debut single "Flowers on the Wall", a Top 5 country and pop hit that year.  Members of Johnny Cash's band, the Tennessee Three played on the album, as it was recorded in between takes during the recording of a Johnny Cash album.

Con Brio Records: Con Brio Records was a record label active from 1975 to 1979 based in Nashville, Tennessee.  Jeff Walker was co-founder and President of the label with his father Bill Walker.  It was named Billboard Magazine's "Best New Country Label of the Year" in 1977.  The main focus of the label was Country music.  According to GMV Nashville, record producer Bill Walker was the arranger and producer in the late 1970s.  Walker is well known for his role as musical director of the Johnny Cash television show (1969–1971), the Statler Brothers show on TNN (Nashville Network), and the CMA awards show from the 1970s through the early 1990s.  Biff Collie and Johnny K. Covell were the radio promotions staff.  The record label was dormant for many years until Jeff Walker of AristoMedia in 2007 released some of the artists' albums digitally on selective online outlets.  The new label was called GMV Nashville.

Johnny Cash: John R. Cash (born J. R. Cash; February 26, 1932 – September 12, 2003) was an American singer-songwriter, guitarist, actor, and author.  He is widely considered one of the most influential popular musicians of the 20th century and is one of the best-selling music artists of all time, having sold more than 90 million records worldwide.  Although primarily remembered as a country music icon, his genre-spanning songs and sound embraced rock and roll, rockabilly, blues, folk, and gospel.  This crossover appeal won Cash the rare honor of multiple inductions in the Country Music, Rock and Roll, and Gospel Music Halls of Fame.

Jimmy Fortune: Jimmy Fortune (born March 11, 1955 in Williamsburg, Virginia) is an American country music singer from Staunton, Virginia.  Fortune sang tenor for the Statler Brothers for 21 years, and wrote the song "Elizabeth" for the group.  After the Statler Brothers retired he continued to perform, but as a sole artist.

Pop! Goes the Country: Pop!  Goes the Country is a weekly half-hour syndicated variety country music television series that originally aired from September 7, 1974 through January 1, 1982 for a total of 234 episodes.  Originally hosted by Ralph Emery, the series was recorded at the Grand Ole Opry and featured comedy sketches, performances by and interviews with country music singers, both established celebrities and up and coming singers and musicians.  In 1980, Tom T. Hall replaced Emery as the host.  In the final year of the series, comedian Jim Varney became a member of the show, and the show moved from the Opry House to Opryland USA's Gaslight Theater.  It is also considered as a spin-off of "The Porter Wagoner Show".  The Statler Brothers sang the show's original theme song.

Denver Dream (song): "Denver Dream" is a song by American singer Donna Summer, released in 1974.  This was her first collaboration with Giorgio Moroder and Pete Bellotte, a songwriting team that would stay together until 1981 and produce all of Summer's biggest disco hits.  At this time Summer was living in Munich, Germany and singing backup for groups such as Three Dog Night.  Through her job as a backup singer she met Moroder and before long he started using her as a lead vocalist.  This single also marked the first usage of Summer's stage name (she had previously been credited as Donna Gaines, but had anglicised her married name to Austrian actor Helmut Sommer).  It was released in The Netherlands, Belgium and France in 1974, but did not make any particular impact on the chart.  The B-side, "Something's in the Wind", would, in 1977, be re-worked into the single, "Back in Love Again", which would become a top-40 UK hit.  Both sides of this single now appear on the CD compilation "Giorgio Moroder - Vol.  2-On The Groove Train 1974-85"

Supporting paragraphs: The Statler Brothers Johnny Cash
Answer: 1932