Question: Charlia Brown is the lead character of a television special written with a popular Christmas song written by who?
Context: "Christmas Time" is a song by Canadian rock singer-songwriter Bryan Adams.  It was written by Adams and Jim Vallance and became Adams' most popular Christmas song.  It was originally released on clear, green vinyl with a picture sleeve.  It was written and recorded in Vancouver, British Columbia, Canada.  No music video was shot for the song.  Over thirty years after it was first recorded, the song still receives significant radio airplay each year during the Christmas season. Rudolph the Red-Nosed Reindeer is a 1964 Christmas stop motion animated television special produced by Rankin/Bass Productions and currently distributed by Universal Television.  It first aired Sunday, December 6, 1964, on the NBC television network in the United States, and was sponsored by General Electric under the umbrella title of "The General Electric Fantasy Hour".  The special was based on the Johnny Marks song "Rudolph the Red-Nosed Reindeer" which was itself based on the poem of the same name written in 1939 by Marks' brother-in-law, Robert L. May.  Since 1972, the special has aired on CBS, with the network unveiling a high-definition, digitally remastered version of the program in 2005.  As with "A Charlie Brown Christmas" and "How the Grinch Stole Christmas", "Rudolph" no longer airs just once annually, but several times during the Christmas and holiday season on CBS.  Unlike other holiday specials that also air on several cable channels (including Freeform), "Rudolph" only airs on CBS.  It has been telecast every year since 1964, making it the longest running Christmas TV special in history.  2014 marked the 50th anniversary of the television special and a series of postage stamps featuring Rudolph was issued by the United States Postal Service on November 6, 2014. Julbocken, with the opening lines ""En jul när mor var liten"", is a Christmas song written by Alice Tegnér.  The lyrics describe a time when the "Julbocken" (Yule goat or Christmas goat) was still a more popular Christmas gift-bringer in Sweden than the "Jultomten" (Christmas elves or gnomes) or Santa Claus.  The lyrics describe the goat giving presents, a doll for "Mother" when she was a child, who was frightened when the goat jumped; and for her brother, a drum and a trumpet.  When the goat is old, he returns to "Mother", who now has children of her own. "The Little Drummer Boy" (originally known as "Carol of the Drum") is a popular Christmas song written by the American classical music composer and teacher Katherine Kennicott Davis in 1941.  It was recorded in 1951 by the Trapp Family Singers and realised on the choir's first LP "Christmas with the Trapp Family Singers" and released as a single (45rpm).  These were the first recordings released on their new record label Decca Records and further popularized by a 1958 recording by the Harry Simeone Chorale.  This version was re-released successfully for several years and the song has been recorded many times since. "It's the Most Wonderful Time of the Year" is a popular Christmas song written in triple time in 1963 by Edward Pola and George Wyle.  It was recorded and released that year by pop singer Andy Williams for his first Christmas album, "The Andy Williams Christmas Album".  However, the song was not released as a promotional single by Williams' record label (Columbia Records) that year, as they instead opted to promote his cover of "White Christmas" as the official promo single from the album. "Christmas Time Is Here" is a popular Christmas song written by Lee Mendelson and Vince Guaraldi for the 1965 TV special "A Charlie Brown Christmas", one of the first animated Christmas specials produced for network TV in the United States.  Because the song became a hit, two versions were included on the album "A Charlie Brown Christmas": an instrumental version by the Vince Guaraldi Trio and a vocal version by children from St. Paul's Episcopal Church in San Rafael, California. Olive, the Other Reindeer is a 1999 CGI animated Christmas television special written by Steve Young, and directed by Oscar Moore.  The feature was produced by Matt Groening's The Curiosity Company (best known for "Futurama"), and animated by DNA Productions.  It first aired on December 17, 1999 on Fox, produced by 20th Century Fox Television and Flower Films.  The special combines paperlike character art in 3-D environments.  Sometimes, traditional animation is used. A Charlie Brown Christmas is a 1965 animated television special based on the comic strip "Peanuts", by Charles M. Schulz.  Produced by Lee Mendelson and directed by Bill Melendez, the program made its debut on CBS on December 9, 1965.  In the special, lead character Charlie Brown finds himself depressed despite the onset of the cheerful holiday season.  Lucy suggests he direct a neighborhood Christmas play, but his best efforts are ignored and mocked by his peers.  After Linus tells Charlie Brown about the true meaning of Christmas, Charlie Brown cheers up, and the Peanuts gang unites to celebrate the Christmas season. "Frosty the Snowman" (or "Frosty the Snow Man") is a popular Christmas song written by Walter "Jack" Rollins and Steve Nelson, and first recorded by Gene Autry and the Cass County Boys in 1950.  It was written after the success of Autry's recording of "Rudolph the Red-Nosed Reindeer" the previous year; Rollins and Nelson shipped the new song to Autry, who recorded "Frosty" in search of another seasonal hit.  Like "Rudolph", "Frosty" was subsequently adapted to other media including a popular television special by Rankin/Bass Productions (formerly known as Videocraft International), "Frosty the Snowman".  The ancillary rights to the Frosty the Snowman character are owned by Warner Bros., but due to the prominence of the TV special, merchandising of the character is generally licensed in tandem with that special's current owners, DreamWorks Classics. Nu tändas tusen juleljus, is a Christian traditional Swedish language Christmas song, written in 1898 by the Swedish song text writer Emmy Köhler (both text and melody).  Translated into English, the title literally means "Now are lit a thousand Christmas candles".  The theme of the song is the gospel of the newborn Christ and specifically its aspects of domestic harmony and inner peace, brought by the lights of candles as well as of the stars above, most importantly the star of Bethlehem.  It was one of the most popular Christmas songs in Sweden during the 20th century, in churches, homes and schools.  Swedish pop singer Agnetha Fältskog recorded the song on her album "Nu tändas tusen juleljus", named after the song, with her daughter Linda Ulvaeus.
Answer: Lee Mendelson and Vince Guaraldi