Question: What year was the singer of "Hang Down Your Head" born?

full_context: Document 1: Tom Paxton: Thomas Richard Paxton (born October 31, 1937) is an American folk singer-songwriter who has had a music career spanning more than fifty years. In 2009, Paxton received a Grammy Lifetime Achievement Award. He is noteworthy as a music educator as well as an advocate for folk singers to combine traditional songs with new compositions.
Document 2: Closing Time (album): Closing Time is the debut studio album by American singer-songwriter Tom Waits, released in March 1973 on Asylum Records. Produced and arranged by former Lovin' Spoonful member Jerry Yester, "Closing Time" was the first of seven of Waits' major releases by Asylum.
Document 3: Tom Ranier: Thomas John "Tom" Ranier (born July 13, 1949) is an American instrumentalist who primarily plays piano but also saxophone and clarinet (multireedist). As a jazz artist he has recorded widely under his own name and as a sideman for Warner Bros., Concord Records and several other labels. He has been prominent in the film, television, and music recording industry since the 1970s. He has played keyboards, woodwinds and writing music for a long list of assignments, including Grammy, Academy Award, Emmy, and Golden Globe winning media and soundtracks for artists such as , Shirley Bassey, Michael Feinstein, Christina Aguilera, Joe Pass, Plácido Domingo, Barry Manilow, Natalie Cole, and many others. As a pianist and jazz artist, "(his) personal approach mixes aspects of Bud Powell's complexity, Oscar Peterson's ardent swing and Bill Evans' exploratory harmonies."
Document 4: Hang On (Weezer song): "Hang On" is a song by the band Weezer. The song impacted radio on February 15, 2011. It is the seventh track and second single from their eighth studio album, "Hurley". The album version of "Hang On" is co-written by Rick Nowels and features Canadian actor Michael Cera on backing vocals and pseudo-mandolin. The single version features no mandolin, and contains a harder sound.
Document 5: The Black Rider (album): The Black Rider is an album by Tom Waits, released in 1993 on Island Records, featuring studio versions of songs Waits wrote for the play "The Black Rider", directed by Robert Wilson and co-written by William S. Burroughs. The play is based on the German folktale "Der Freischütz", which had previously been made into an opera by Carl Maria von Weber. The play premiered on March 31, 1990, at the Thalia Theater in Hamburg, Germany. Its world English-language premiere occurred in 1998 at the Edmonton International Fringe Festival.
Document 6: Waiting 'Round to Die: "Waiting Around to Die" is a folk/country song written and recorded by Texas singer/songwriter Townes Van Zandt. One of Van Zandt's more famous songs, "Waiting Around to Die" chronicles the life of a fictional drifter as he passes sadly through the experiences of an abusive father, the abandonment of his mother, drug and alcohol abuse, fast women, and even prison. The song appeared first on Van Zandt's debut album, "For the Sake of the Song", in 1968, and later on his 1969 release "Townes Van Zandt". Several live albums, notably "Live at the Old Quarter, Houston, Texas" also feature the song. It also appears on the 1999 album "Far Cry From Dead", a posthumous collection that presents new versions of several of Van Zandt's best songs.
Document 7: Tom Waits: Thomas Alan "Tom" Waits (born December 7, 1949) is an American singer-songwriter, composer, and actor.
Document 8: Townes Van Zandt (album): Townes Van Zandt is the third studio album by the American singer-songwriter Townes Van Zandt, released in September 1969 by Poppy Records. It includes re-recordings of four songs from his 1968 debut album, including the first serious song he ever wrote, "Waitin' Around To Die".
Document 9: Tom Jones (singer): Sir Thomas John Woodward OBE (born 7 June 1940), also known by his stage name Tom Jones, is a Welsh singer. His career has spanned six decades, from his emergence as a vocalist in the mid-1960s with a string of top hits, regular touring, appearances in Las Vegas (1967–2011), and career comebacks—to coaching on "The Voice UK" from 2012 (with the exception of 2016). Jones's powerful voice has been described as a "full-throated, robust baritone".
Document 10: Hang Down Your Head: Hang Down Your Head is a song by Tom Waits appearing on his 1985 album "Rain Dogs". It released as a single in 1985 by Island Records. The song is in the same vein as Tom Waits' earlier work, featuring a more conventional melodic structure in comparison to other songs on his "Rain Dogs" album albeit featuring an idiosyncratic arrangement. Allmusic critic Stewart Mason called the song "among the most direct and effective things Waits has ever written."
Document 11: List of works by Tom Paxton: Tom Paxton (born October 31, 1937) is an American folk singer-songwriter who has had a music career spanning more than fifty years. In 2009, Paxton received a Grammy Lifetime Achievement Award. He is noteworthy as a music educator as well as an advocate for folk singers to combine traditional songs with new compositions.
Document 12: Down by the Old Mainstream: Down by the Old Mainstream was American Alternative country band Golden Smog's first full-length album, released in 1995. Its title is from a line in both the Wilco song, "Someday Soon" from the album, "Being There, "and from "Radio King," the last track on this album.
Document 13: She Hangs Brightly: She Hangs Brightly is the debut studio album by American dream pop band Mazzy Star. It was released in 1990 on Rough Trade Records, following the demise of David Roback's previous band Opal. The album was rereleased by Capitol later that same year. The first track "Halah" was released as a single and reached #19 on the Billboard Alternative Songs chart. It showcases the band's trademark effect with haunting guitar work and lyrics, and Hope Sandoval's detached vocals. David Roback's Robby Krieger-inspired psychedelic blues slide guitar style can be heard on the song "Free". "Ghost Highway" is another psychedelic rock track, with a fast rhythm. This song dates from the band's days as Opal and was initially slated to be the title track of Opal's second album. While not a commercial success, this album did establish Mazzy Star as a unique band with a unique sound.
Document 14: Tom Rapp: Thomas Dale "Tom" Rapp (born March 8, 1947) is an American singer and songwriter, best known as the leader of Pearls Before Swine, the psychedelic folk rock group of the 1960s and 1970s. More recently he has practiced as a lawyer.
Document 15: Tom Spahn: Thomas G. ("Tom") Spahn (born July 30, 1955) is a three-time Emmy Award winning composer, Synthesizer Programmer for the 1996 Grammy Award nominated album by Earth Kitt, "Back in Business", another Emmy Nomination in 2001 for Mastering Dizzy South America Tour, is an American musician born in Park Forest, Illinois and currently residing in New York City. Spahn is a longtime musical director and arranger and has worked with numerous musicians and composers on a myriad projects, performances and recordings.
ground_truth: 1949