Question: Which member of the Bee Gees Line up was born on 22 December 1949 ?
Context: Maurice Ernest Gibb, CBE ( ; 22 December 1949 – 12 January 2003) was a singer, songwriter, multi-instrumenatalist and record producer, who achieved fame as a member of the pop group the Bee Gees.  Although his brothers Barry and Robin Gibb were the group's main lead singers, most of their albums included at least one or two compositions by Maurice, including "Lay It on Me", "Country Woman" and "On Time".  The Bee Gees were one of the most successful rock-pop groups ever.  Gibb's role in the group focused on melody and arrangements, providing backing vocal harmony and playing a variety of instruments. Robin Hugh Gibb (22 December 1949 – 20 May 2012) was a singer, songwriter and record producer, who gained worldwide fame as a member of the pop group the Bee Gees, with his brothers Barry and Maurice Gibb, his fraternal twin.  Robin Gibb also had his own successful solo career. The Kid's No Good was to have been Barry Gibb's debut solo album following his departure from the Bee Gees in December 1969.  There was no official title given to the album at the time.  The line "the kid's no good", which the album is commonly titled on several bootleg releases, is also featured in the Bee Gees song "Come Home Johnny Bridie" on the 1973 album "Life in a Tin Can".  The album features orchestral arrangements by Bill Shepherd who performed the same role for the Bee Gees from 1965 to 1972 (Robin and Maurice Gibb's solo recordings were done with different arrangers). Stephen "Steve" Rucker (born 2 March 1954) is an American musician and drummer who served as the drummer with many artists.  His biggest and well known act was the Bee Gees.  With the Bee Gees band, he appeared on "The Tonight Show", "Late Night with David Letterman", Oprah Winfrey, The Rosie O'Donnell Show, the Rock and Roll Hall of Fame induction and a Royal Variety Performance for the Queen of England.  Rucker appears on the Bee Gees' "One Night Only" recording and DVD.  He is currently the Drumset Studies director of the University of Miami's Frost School of Music. Trafalgar is a 1971 album by the Bee Gees.  It was their ninth album (seventh internationally), and was released in September 1971 in the US, and November 1971 in the UK.  The album was a moderate hit in the United States, and peaked at No. 34.  The lead single "How Can You Mend a Broken Heart?"  was the first Bee Gees' No. 1 single in the United States but failed to chart in Britain as did the album.  It is Geoff Bridgford's only full-length appearance on a Bee Gees album as an official member. "Wouldn't I Be Someone" is a song by The Bee Gees.  It was released on 22 June 1973 in the United Kingdom and in July 1973 in the United States.  The cover of the single was also used on "Best of Bee Gees, Volume 2". "Stayin' Alive" is a disco song by the Bee Gees from the "Saturday Night Fever" motion picture soundtrack.  The song was written by the Bee Gees members (Barry, Robin, and Maurice Gibb) and produced by the Bee Gees, Albhy Galuten, and Karl Richardson.  It was released on 13 December 1977 as the second single from the "Saturday Night Fever" soundtrack.  It is one of their signature songs.  In 2004, "Stayin' Alive" was placed at number 189 on the list of Rolling Stone's 500 Greatest Songs of All Time.  In 2004, it ranked No. 9 on AFI's 100 Years...100 Songs survey of top tunes in American cinema.  In a UK television poll on ITV in December 2011 it was voted fifth in "The Nation's Favourite Bee Gees Song". were a pop music group formed in 1958.  Their lineup consisted of brothers Barry, Robin, and Maurice Gibb.  The trio were successful for most of their decades of recording music, but they had two distinct periods of exceptional success: as a popular music act in the late 1960s and early 1970s, and as prominent performers of the disco music era in the mid-to-late 1970s.  The group sang recognisable three-part tight harmonies; Robin's clear vibrato lead vocals were a hallmark of their earlier hits, while Barry's R&B falsetto became their signature sound during the mid-to-late 1970s and 1980s.  The Bee Gees wrote all of their own hits, as well as writing and producing several major hits for other artists. "The Battle of the Blue and the Grey" is a debut single by the Bee Gees, backed by "The Three Kisses of Love" and released on March 22, 1963.  Like all the Bee Gees' output prior to 1967 (with the notable exception of Spicks and Specks) it was only released in Australia.  It was performed in Australian television "Bandstand", the footage of that performance still exists.  It reached #93 in Australia. A founder member of Amen Corner and its successor Fair Weather, Weaver replaced Rick Wakeman in Strawbs when he left to join Yes.  Weaver was with the Strawbs during their most successful and critically acclaimed period where he played some notable mellotron and other keyboard sequences on their albums "Grave New World" and "Bursting at the Seams".  He left Strawbs in 1973, and toured with Mott the Hoople in the US tour.  Queen were their support act.  He also appeared with the Streetwalkers and session work followed, including work with the Pet Shop Boys.  He also played behind the Bee Gees at the initiation of his former Amen Corner colleague drummer Dennis Bryon, who had joined their backing band a year earlier during their successful 1975-79 period, taking in such highlights as "Jive Talkin'", "You Should Be Dancing" and the band's famous contributions on the "Saturday Night Fever" soundtrack.  The three-piece backing band of Weaver, Bryon and the perennial Bee Gees sideman, Alan Kendall, played on the Bee Gees' albums, "Main Course", "Children of the World", "Here at Last... Bee Gees... Live" and "Spirits Having Flown".  Unusually, Weaver featured as a co-composer on "(Our Love) Don't Throw It All Away", made a hit by the group's younger brother Andy Gibb.  Weaver also co-composed the songs for Jimmy Ruffin's 1980 album "Sunrise" with Robin Gibb as lyricist, including the hit single, "Hold On (To My Love)".
Answer: Maurice Gibb