Question: When was the American singer who is part of  Backstreet Boys discography born 

Context paragraphs:
Backstreet Boys discography: The discography of American pop vocal group Backstreet Boys consists of eight studio albums, 28 singles, one live album, three compilation albums and 25 music videos. Formed in Orlando, Florida in 1993, the group consists of Nick Carter, Brian Littrell, Kevin Richardson, A. J. McLean and Howie Dorough.  Richardson left the group in 2006 to pursue other interests, but rejoined in 2012.  The Backstreet Boys released their debut single "We've Got It Goin' On" in 1995, which peaked at number sixty-nine on the "Billboard" Hot 100.  The single, however, entered the top ten in many European countries.  Their debut album, "Backstreet Boys", was released internationally in 1996, and was certified three times platinum in Europe, and diamond in Canada.  In 1997, they released their second international album, "Backstreet's Back", which continued their international success.  At the same time, they released their second self-titled album in the United States.  It peaked at number four and eventually became the tenth best-selling album of the 1990s.

Before the Backstreet Boys 1989–1993: Before The Backstreet Boys 1989–1993 is the unofficial, independently released demo album released by Backstreet Boys member Nick Carter.  The songs were recorded by Nick from 1989 to 1993.  The song "Hard to Get" was written by Mark J. Dye for Carter and his former singer partner, Malia Tuaileva.  Tuaileva appears in a duet on the album and singing solo on the album with the track, "Mansion In Malibu".

The Essential Backstreet Boys: The Essential Backstreet Boys is the third compilation album by American pop group Backstreet Boys, released by RCA Records and Legacy Recordings as part of their "Essential" series.  It was released on September 26, 2013 in the United Kingdom, and on October 22, 2013 in the United States.  The album includes songs from the group's first seven studio albums, "Backstreet Boys" (1996), "Backstreet's Back" (1997), "Millennium" (1999), "Black & Blue" (2000), "Never Gone" (2005), "Unbreakable" (2007), and "This Is Us" (2009).  It also includes the song "If You Stay" recorded for the 1997 film "Booty Call", and "Drowning" from their first greatest hits compilation, "The Hits – Chapter One" (2001).

Brian Littrell: Brian Thomas Littrell (born February 20, 1975) is an American singer, songwriter and actor, best known as a member of the Backstreet Boys.  He is also a CCM singer and released a solo album, "Welcome Home", in 2006.  Brian has had five top 20 solo singles in the US.

Backstreet Boys: Show 'Em What You're Made Of: Backstreet Boys: Show 'Em What You're Made Of is a 2015 American documentary film about the career of the American vocal group Backstreet Boys, released on January 30, 2015 in the U.S., and was released on February 26, 2015 in the UK and Europe, and March 28, 2015 for the rest of the world.  It was directed by Stephen Kijak.

Backstreet Boys (1996 album): Backstreet Boys is the self-titled international debut studio album by American boy band Backstreet Boys.  The album was released around Europe, Asia, Canada and in a few other markets.  It was a success, becoming one of the biggest debut albums ever and contains a number of the band's most memorable singles.  All of those singles were later released on the second self-titled debut in the United States in 1997, which compiled songs from this album, and the band's second international release, "Backstreet's Back".

Nick Carter (musician): Nickolas Gene "Nick" Carter (born January 28, 1980) is an American singer, songwriter, actor, and dancer.  He is best known as a member of the pop group the Backstreet Boys.  As of 2015, Carter has released three solo albums, "Now or Never", "I'm Taking Off" and "All American" during breaks between Backstreet Boys schedules, and a collaboration with Jordan Knight titled "Nick & Knight".  He has made occasional television appearances and starred in his own reality shows, "House of Carters" and "I (Heart) Nick Carter".  He gained fame in the mid 1990s and early 2000s as a teen idol.  He is also the older brother of singer Aaron Carter and the late Leslie Carter.

Playlist: The Very Best of Backstreet Boys: Playlist: The Very Best of the Backstreet Boys is the second greatest hits album by American vocal group Backstreet Boys, released by Legacy Recordings as part of their "Playlist" series.  This compilation includes songs from the group's first six studio albums, "Backstreet Boys" (1996), "Backstreet's Back" (1997), "Millennium" (1999), "Black & Blue" (2000), "Never Gone" (2005) and "Unbreakable" (2007), and the single "Drowning" from "The Hits – Chapter One" (2001).

It's Christmas Time Again: "It's Christmas Time Again" is a Christmas song by American vocal group Backstreet Boys.  The song was written by Backstreet Boys members Nick Carter and Howie Dorough along with Mika Guillory and Morgan Taylor Reid in early October 2012.  It is the first song by the Backstreet Boys to feature Kevin Richardson's vocals in six years.  Richardson left the group in 2006 and rejoined in 2012.  It is also the first song released under the group's own label K-BAHN.

Welcome Home (You): "Welcome Home" also known as "Welcome Home (You)" is a single by Backstreet Boys member Brian Littrell.  It was the first single from his first solo album "Welcome Home", and it was written by Littrell and Dan Muckala.  Littrell wrote his part in Vienna, Austria when he was touring with the Backstreet Boys.  This song was also featured in the compilation album "WOW Hits 2007".

Supporting paragraphs: Backstreet Boys discography Brian Littrell
Answer: February 20, 1975